Abdullah bin Yazid Ansari said in his sermon: Sayyiduna Bara bin Azib (may Allah be pleased with him) informed us, and he is not a liar (i.e., he is truthful), that indeed when the Messenger of Allah (peace and blessings be upon him) would raise his head from bowing (ruku‘), they (all the companions) would remain standing until he (peace and blessings be upon him) prostrated, then they would go into prostration.