محمد بن سنان عن أبي معاذ عن أبي أراكة قال:: صليت خلف علي عليه السلام الفجر في مسجد كم هذا فانتفل عن يمينه وكان عليه كآبة حتى طلعت الشمس على حايط مسجدكم هذا قدر رمح وليس هو عليه اليوم ثم اقبل على القوم فقال: إما والله لقد كان أصحاب رسول الله صلى الله عليه وآله وهم يبيتون هذا الليل به يراوحون بين جباههم وركبهم فإذا أصبحوا أصبحوا غبرا صفرا بين أعينهم شبه ركب المعزا فإذا ذكر الله مالوا كما يميل الشجر في يوم الريح وانهملت أعينهم حتى تبل ثيابهم قال: ثم نهض وهو يقول: والله لكأنما بات القوم غافلين ثم لم ير مفترا حتى كان من الفاسق ما كان.
29.Muḥammad ibn Sinān narrated from Abū Muʿādh, from Abū Arākah who said, “I prayed the fajr prayer behind ʿAlī  in this mosque of yours, then [after completing the prayer,] he turned towards his right side and had a sorrowful disposition. [He remained there] until the sun rose over the wall of this mosque of yours to the extent of a spear – and it (the same wall) is not there today – then he came to the people and said, ‘Indeed, by Allah, the companions of the Messenger of Allah (ṣ) would spend this night alternating between [worshipping on] their foreheads and their knees [through prostration and bowing] and when morning came, they rose up, dusty and pale, with a mark between their eyes like the knee of a goat. Whenever Allah was mentioned, they would bend the way a tree bends on the windy day, and tears would flow from their eyes until their clothes became wet.’ Then he got up and departed saying, ‘By Allah, it is as though the people are asleep in their negligence.’ Then he was not seen laughing until the wicked one (Ibn Muljam) did what he did.”