Al-Kāfi - The Book of Prayer

Chapter: One Joining a Row, Alone in One Row or Away From the Prayer Leader More Than One Step َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّدٍ قَالَ ذَكَرَ الْحُسَيْنُ أَنَّهُ أَ٠َنْ يَسْأَلُهُ عَنْ رَجُلٍ صَلَّى إِلَى جَانِبِ رَجُلٍ فَقَا٠َ عَنْ يَسَارِهِ وَهُوَ لاَ يَعْلَ٠َ وَهُوَ فِي صَلاَتِهِ كَيْفَ يَصْنَعُ قَالَ يُحَوِّلُهُ عَنْ يَ٠10.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad who has the following: Al-Husayn has mentioned that he (the Imam), ’Alayhi al-Salam, commanded a man, who was asking him (the Imam) about a man who was performing Salah (prayer) on the side of a man standing on his left. He did not know (that he is to stand on the right side of the Imam) and then he learned in his Salah (prayer) how he is to do.

He (the Imam) commanded to turn him to his right.” رسل - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (5/288))