Imam Tahtawi al Hanafi  (rah) says: 

فائدة ذكر القهستاني عن كنز العباد أنه يستحب أن يقول عند سماع الأولى من الشهادتين للنبي صلى الله عليه وسلم صلى الله عليك يا رسول الله وعند سماع الثانية قرت عيني بك يا رسول الله اللهم متعني بالسمع والبصر بعد وضع إبهاميه على عينيه فإنه صلى الله عليه وسلم يكون قائدا له في الجنة 

وذكر الديلمي في الفردوس من حديث أبي بكر الصديق رضي الله عنه مرفوعا من مسح العين بباطن أنملة السبابتين بعد تقبيلهما عند قول المؤذن أشهد أن محمدا رسول الله وقال أشهد ان محمدا عبده ورسوله رضيت بالله ربا وبالإسلام دينا وبمحمد صلى الله عليه وسلم نبيا حلت له شفاعتي اه وكذا روي عن الخضر عليه السلام وبمثله يعمل في الفضائل

Translation: Imam Qahstani (rah) narrates in his book Kanz al Ibaad: “IT IS RECOMMENDED (يستحب)” upon hearing the first testification upon Prophet (Peace be upon him) and say:  Salalahu Alayka Ya Rusul Ullah and upon hearing the second time say: Qurrato ‘Aini Bika Ya RasoolAllah Allahuma Matti’ni Bis Sam’i Wal Basari and then one should kiss his thumbs, the Prophet will take such a person to Jannah

It is narrated by Daylami in his Musnad al Firdaws the hadith of Abu Bakr (ra) in Marfu form that when you hear the Muadhin saying “أشهد أن محمدا رسول الله” then you should kiss your thumbs and rub them on your eyes. (The Prophet) said: Whosoever does like my Khalil (i.e. Abu Bakr) did then he will receive my Shaf’at. Similar to it has been narrated in narration of Khidr (a.s) and “(THESE HADITHS) ARE FOLLOWED IN FADHAIL” [Imam Tahtawi in Sharh Miraqih al Falah (1/110)]

Imam Ibn Abideen ash- Shami (rah) also declared this Amal as “MUSTAHAB” [Hashiya Radd ul Muhtar ala Dur ul Mukhtar, Volume No. 1, Page No. 428, Published by Dar ul Fikr, Beirut, Lebanon]

Tafsir Ruh ul Bayan states: 

وفى قصص الانبياء وغيرها ان آدم عليه السلام اشتاق الى لقاء محمد صلى الله عليه وسلم حين كان فى الجنة فاوحى الله تعالى اليه هو من صلبك ويظهر فى آخر الزمان فسأل لقاء محمد صلى الله عليه وسلم حين كان فى الجنة فاوحى الله تعالى اليه فجعل الله النور المحمدى فى اصبعه المسبحة من يده اليمنى فسبح ذلك النور فلذلك سميت تلك الاصبع مسبحة كما فى الروض الفائق.

او اظهر الله تعالى جمال حبيبه فى صفاء ظفرى ابهاميه مثل المرآة فقبل آدم طفرى ابهامية ومسح على عينيه فصار اصلا لذريته فلما اخبر جبرائيل النبى صلى الله عليه وسلم بهذه القصة ال عليه السلام " من سمع اسمى فى الاذن فقبل طفرى ابهامية ومسح على عينيه لم يعم ابدا " قال الامام السخاوى فى المقاصد الحسنة ان هذا الحديث لم يصح فى المرفوع 

Translation: It is narrated in books regarding stories of Prophets that when Adam (a.s) had the desire to meet Prophet Muhammad (Peace be upon him) in Jannah, at that point Allah sent a Wahi to him that he (Prophet Muhammad Peace be upon him) will be appointed as Last Prophet from his pregony. When Adam (a.s) desired to see him then Allah made the Nur of Prophet Muhammad (Peace be upon him) appear in the right index finger of Adam (a.s) and this Nur praised Allah, this is why the index finger is also called the finger of testification as is mentioned in (book) Roudh al Fa’iq. Allah made the beauty of Prophet Muhammad (Peace be upon him) appear as a mirror in both the nails of his thumb, upon seeing that Adam (a.s) kissed them and rubbed them on his eyes and “THUS THIS SUNNAH WAS ESTABLISHED IN HIS DECENDANTS” and when Jibreel (a.s) informed Prophet Muhammad (Peace be upon him) regarding this, he said: Whenever anyone of you hears my name during Adhaan then he should kiss his thumbs and put them on his eyes, doing so will never make him blind. Imam Sakhawi (rah) said in his Al- Maqasid al- Hassana that this hadith is not Sahih in the Marfuh form [Tafsir Ruh ul Bayaan (11/107)]

Imam Sakhawi says:

ذكره الديلمي في الفردوس من حديث أبي بكر الصديق أنه لما سمع قول المؤذن (أشهد أن محمدا رسول الله) قال هذا وقبل باطن الانملتين السبابتين ومسح عينيه 

فقال (من فعل مثل ما فعل خليلي فقد حلت عليه شفاعتي) ولا يصح

Translation: It is narrated by Daylami in his book al- Firdaws, the hadith from Abu Bakr (ra) that when you hear the Muadhin say “أشهد أن محمدا رسول الله” then you should kiss your thumbs and rub them on your eyes. (The Prophet) said: Whosoever does like my Khalil (i.e. Abu Bakr) did then he will receive my Shaf’at. It is not Sahih. 

Then he says:

وحكى الشمس محمد بن صالح المدني امامها وخطيبها في تاريخه عن المجد أحد القدماء من المصريين أنه سمعه يقول من صلى على النبي إذا سمع ذكره في الاذان وجمع أصبعيه المسبحة والابهام وقبلهما ومسح بهما عينيه لم يرمد أبدا 

It is narrated from Imam Shams Muhammad bin Salah al- Madni “THE IMAM AND KHATIB” in his book of Tarikh who says that I heard Hadrat Majd Misri, “ONE OF THE GREAT SAINTS OF HIS TIME” say: “Whoever hears the blessed name of the prophet in Azan and, joining the index fingers with the thumbs, kisses them and then rub them over the eyes his eyes will never hurt”. (Al- Maqasidul Hasanah Fi al- Ahadith al- Da’irati ‘Ala al- Sunnah)

Then he says:

قال ابن صالح وسمعت ذلك أيضا من الفقيه محمد بن الزرندي عن بعض شيوخ العراق أو العجم أنه يقول عندما يمسح عينيه صلى لله عليك يا سيدي يا رسول الله يا حبيب قلبي ويا نور بصري ويا قرة عيني وقال لي كل منهما منذ فعله لم ترمد عيني

قال ابن صالح وأنا ولله الحمد والشكر منذ سمعته منهما استعملته فلم

ترمد عيني وأرجو أن عافيتهما تدوم وأني أسلم من العمى إن شاء لله 

Imam Sakhwi quotes again from Tareekh of Imam Shams Muhammad Bin Salah Madani who says; “I heard like of it from “FAQIH” Muhammad bin Zarnadi (rah) and some “SHAYOOKH OF IRAQ AND AJAM”  that one should kiss his eyes and say: “Sallaho alaika Ya Sayyidi Ya Rusul Allah, Ya Habibi Qalbi Sallaho Alaika Ya Sayyidi Ya RasoolAllah Ya Habiba Qalbi Ya Nura Basari wa- Ya Qurrat’ Aayni” Then his eyes will never incur pain”. Imam Ibn Salah said: By Allah I heard this and started acting upon it and up and until today I have never complained about my eyes and they would Insha Allah never cause me pain.( Imam Sakhawi in al- Maqasid ul Hassana, Volume No.1, Page No. 140] 

Then he narrates from Imam Hassan (ra)

قال وروي عن الفقيه محمد بن سعيد الخولاني قال أخبرني الفقيه العالم أبو الحسن علي بن محمد بن حديد الحسيني أخبرني الفقيه الزاهد البلالي عن الحسن عليه السلام أنه قال من قال حين يسمع المؤذن يقول أشهد أن محمدا رسول الله مرحبا بحبيبي وقرة عيني محمد بن عبد الله ويقبل إبهاميه ويجعلهما على عينيه لم يعم ولم يرمد

Translation: Imam Sakhawi narrates from Faqih Muhammad bin Sa’eed Khulani who heard from the Faqih of world Abul Hassan Ali bin Muhammad bin Hadid al Hussayni who heard from the Faqih and Zahid al- Bilali that Hadrat Imam Hasan RadiAllaho Anhu states: “Who ever when hearing the Muazzin recite Ashhadu Anna Muhammadar Rasoolullah says Marhaban Bi Habibi wa Qurratu ‘Aini Muhammad- ibni Abdillah. Then kisses both the thumbs and rubs them over his eyes then never will he become blind nor will his eyes hurt”. [ibid]

Imam Sakhawi after proving all this said that these ahadith are not Sahih in Marfu form, this quote has been hypocritically used by envy doers although Imam Sakhawi has proven this act to be Mujarib (i.e. acted upon by Muhaditheen and Mashaikh) 

Imam al Ajluni (rah) says in his Kashf al Khafa:

رواه الديلمي عن أبي بكر أنه لما سمع قول المؤذن أشهد أن محمدا رسول الله قاله وقبل باطن الأنملتين السبابتين ومسح عينيه فقال صلى الله عليه وسلم من فَعَلَ فِعْلَ خليلي فقد حلت له شفاعتي. 

قال في المقاصد ولا يصح، وقال القاري وإذا ثبت رفعه إلى الصديق فيكفي العمل به لقوله عليه الصلاة والسلام عليكم بسنتي وسنة الخلفاء الراشدين من بعدي 

Translation: It is narrated by Daylami from Abu Bakr (ra) that when you hear the Muadhin saying “أشهد أن محمدا رسول الله” then you should kiss your thumbs and (index) fingers and rub them on your eyes. (The Prophet) said: Whosoever does like my Khalil (i.e. Abu Bakr) did then my Shaf’at will become halal upon him.

Imam Sakhawi says in his Al- Maqasid: This is not Sahih (in Marfu form), whereas Mullah Ali Qari (rah) said: When the raising of this hadith is proven till Al- Sadeeq (ra) “THEN IT IS ENOUGH TO FOLLOW IT” because the Prophet (Peace be upon him) told to follow his Sunnah and “THAT OF KHULAFA AR RASHIDEEN” [Imam al- Ajluni in Kashf al Khafa under Hadith # 2296, Published by Dar ul Kutb al- iLmiyyah]

Even the deobandi authority Mufti Taqi Uthmani said:

Upon listening to the Adhan in the Masjid, you heard the words “Ashhadu Anna Muhammad al- Rasul Allah” you suddenly felt a deep sense of love for the Messenger of Allah (Allah bless him & give him peace) and in this state of love and ecstasy you kissed your thumbs and placed them on your eyes. This action, in of itself, cannot be considered sinful or Bid’a. The reason being is that you did this out of love for the Messenger of Allah (Allah bless him & give him peace), and love and respect for the Messenger of Allah (Allah bless him & give him peace) is a praiseworthy act and a sign of faith….” (Islahi Khutbat (Urdu), 1/231)