Ibrahim narrated: Alqamah and al-Aswad set out with Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) towards the mosque, and they met the people coming back, having already prayed. So he took the two of them back to the house, placed one of them on his right and the other on his left, then led them in prayer.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 9348