Abdur Rahman bin Abi Layla عبد الرحمن بن أبي ليلى · The Book of Forgetfulness (In Prayer)

"The Messenger of Allah (ﷺ) came to us in the Majlis of Sa'd bin 'Ubadah and Bashir bin Sa'd said to him: 'Allah has commanded us to send Salah upon you, O Messenger of Allah; so how should we send salah upon you?' The Messenger of Allah (ﷺ) remained silent until we wished that he had not asked him. Then he said: 'Say: 'Alahumma salli 'ala Muhammad wa 'ala ali Muhammad, kama sallaita 'ala Ibrahima wa barik 'ala Muhammad kama…

"It was said to the Prophet (ﷺ): We have been commanded to send salah and salams upon you. We know how to send salams, but how should we send salah?' He said: Say: 'Alahumma salli 'ala Muhammad wa 'ala ali Muhammad, kama sallaita 'ala Ibrahima wa barik 'ala Muhammad kama barakta 'ala ali Ibrahim fil-'alamin, innaka hamidun majid (O Allah, send salah upon Muhammad and upon the family of Muhammad, as You sent salah upon the family of Ibrahim).'"

"We said: 'O Messenger of Allah (ﷺ), we know about sending salams upon you, but how should we send salah upon you?' He said: "Say: 'Alahumma salli 'ala Muhammad wa 'ala ali Muhammad, kama sallaita 'ala Ibrahima wa barik 'ala Muhammad kama barakta 'ala ali Ibrahim fil-'alamin, innaka hamidun majid (O Allah, send salah upon Muhammad and upon the family of Muhammad, as You sent salah upon the family of Ibrahim, and send blessings upon Muhammad and upon the family…

"The Messenger of Allah (ﷺ) said the salam then he performed two prostrations of forgetfulness while he was still sitting, then he said the salam." He said: He mentioned it in the hadith of Dhul-Yadain.

"My father used to say following every prayer: 'Allahumma inni a-udhu bika min al-kufri wal-faqri wa 'adhab al-qabr. ( O Allah, I seek refuge with You from Kufr, poverty, and the torment of the grave)' and I used to say them (these words). My father said: 'O my son, from whom did you learn this?' I said: 'From you. He said: "The Messenger of Allah (ﷺ) used to say them following the prayer.'"