Musannaf Ibn Abi Shaybah 5283 — Those who used to say: when the imam

Al-Sha'bi said: Shurayh would come on Friday; if the imam had not yet come, he would pray two rak'ahs, and if the imam had come, he would sit down, wrap his arms around his knees, and sit facing the imam in such a way that he did not turn to the right or the left at all.