Masrouq bin al-Ajda' مسروق بن الأجدع · The Book of Forgetfulness (In Prayer)

A man from among the companions of the Prophet (ﷺ) told him that he heard the Messenger of Allah (ﷺ) say: 'If any one of you in praying, let him not lift his gaze to the sky, or his eyesight will be taken away.'"

"I heard Abu Al-Ahwas saying to us in a gathering with Ibn Al-Musayyab when Ibn Al-Musayyab was sitting there, that he had heard Abu Dharr say: The Messenger of Allah (ﷺ) said: "Allah (SWT) continues to look upon His slave while he is praying, so long as he does not turn away. If he turns his face away, He turns away from him."

"I asked the Messenger of Allah (ﷺ) about looking here and there during prayer. He said: 'That is something that the Shaitan snatches from one's prayer.'"

"Ammar bin Yasir led the people in prayer and he made the prayer short. It was as if they disliked that, so he said: 'Did I not do bowing and prostration properly?' They said: 'Yes.' He said: 'And I said a supplication that the Prophet (ﷺ) used to say:Allahumma bi 'ilmikal-ghaiba wa qudratika 'alal-khalqi ahini ma 'alimtal-hayata khairan li, wa tawaffani idha 'alimtal-wafata khairan li. Allahumma as'aluka khashyataka fil-ghaibi wash-shahadati wa as'aluka kalimatul-aqua fir-rida'i wal ghadab, wa as'alukal-qasda fil faqr…

"I asked Anas bin Malik: 'How should I leave after I have prayed- to the right or to the left?' He said: 'I usually saw the Messenger of Allah (ﷺ) leave to the right.'