Al-Kāfi - The Book of Prayer

Chapter: Humility during Salah (prayer) and the Contemptibility of Playfulness during Prayer 7ـ الْحُسَيْنُ بْنُ ٠َّدٍ عَنِ الْحَسَنِ بْنِ عَلِيٍّ الْوَشَّاءِ عَنْ أَبَانِ بْنِ عُثْ٠َانَ عَنِ الْفُضَيْلِ بْنِ يَسَارٍ عَنْ أَحَدِهِ٠) أَنَّهُ قَالَ فِي الرَّجُلِ يَتَثَاءَبُ وَيَتَ٠َطَّى فِي الصَّلاَةِ قَالَ هُوَ ٠ِنَ الشَّيْطَانِ وَلاَ يَ٠7.

Al-Husayn ibn Muhammad has narrated from Mu‘alla’ ibn Muhammad from al-Hassan ibn Ali al-Washsha’ from Aban ibn ‘Uthman from al-Fudayl ibn Yasar from one of the two Imam, ‘Alayhim al-Salam, who has said the following: “About a man’s yawning and stretching during Salah (prayer) the Imam (a.s.), has said, ’It comes from Satan over which he has no control (but one should control things that cause it to happen).”’ شهور - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (15/78))