When the congregation was missed, Aswad (may Allah be pleased with him) would go to another mosque (where there was a possibility of joining the congregational prayer). And Anas bin Malik (may Allah be pleased with him) attended a mosque where the prayer had already been performed. He then gave the adhan, pronounced the iqamah, and prayed with the congregation.

Narrated `Abdullah bin `Umar: Allah's Apostle said, "The prayer in congregation is twenty seven times superior to the prayer offered by person alone."