All the commentators...
All the commentators, Shi’a and Sunnis, agreed that the of the Prophet, about whom the above Qur'anic verse was revealed, cared to see the Prophet and said, "O Messenger of Allah we know how to salute you, but we do not know how to pray on you." He said.
"Say, may Allah bless Muhammad and the household of Muhammad in the same way as you bless Ibrahim and the household of Ibrahim in the world, You are the Praise-worthy and the Glorious, and do not pray on me by the shortened (al-Batra') prayer." They said, “And what is the shortened prayer, O Messenger of Allah?" He said, “Why do you say may Allah bless Muhammad and then stop, for Allah is perfect and only accepts perfection." After that the Prophet's companions followed the Prophet's order and they performed the complete prayer.
Even Imam al-Shafii said in their honour: “O household of the Messenger of Allah Your love is an order from Allah revealed in the Qur'an You are highly honored, and he who does not bless you, his prayer is not valid.
I listened very carefully to what he had said, and his words entered my heart and found a positive echo.” Indeed, I had read what he had said in some books but could not remember their titles, and confessed to him that when we say our blessings on the Prophet we also include all his household and , but we do not specify ‘Ali with the salutation, as the Shi’a do.
He asked, "What do you think of al-Bukhari?" I said, "He is a great Sunni Imam and his book is the most reliable book after the book of Allah (the Qur'an)." Then, he stood up and pulled "Sahih al-Bukhari" from his library and searched for a particular page he wanted and gave it to read: "We have been informed by so and so that ‘Ali (may Allah grant him peace) ..." I could not believe my eyes and was very surprised to the extent that I thought it was not "Sahih al-Bukhari", and looked at the page and the cover again, and when my friend sensed my doubtful looks, he took the book from me and opened another page, it read: "‘Ali ibn al- Husain, may Allah grant them peace." After that I could only say to him, "Glory be to Allah." He was satisfied with my answer, so he left the room and I stayed behind thinking, reading those pages again and making sure of the book's edition, which I found had been published and distributed by al-Halabi & Sons Co.
in Egypt.