The Sahabah (may Allah be pleased with them) were very keen to follow the teachings of the Prophet (blessings and peace of Allah be upon him) in all things, and to transmit them to those who came after them, especially the prayer, which is the foundation of faith. In this hadith, the Tabi‘i Sa‘id ibn al-Harith explains that when Abu Sa‘id al-Khudri (may Allah be pleased with him) led the people in a congregational prayer, he would say the takbir out loud when he raised his head from prostration, when he prostrated, when he raised [his head again]and when he got up following the [first] two rak‘ahs, then he told them that this way was how the Prophet (blessings and peace of Allah be upon him) prayed. A report narrated by Ahmad adds: When he finished praying, it was said to him: The people are disagreeing about the way you are praying. The disagreement was as to whether the takbir should be said out loud or quietly. He stood by the minbar and said: By Allah, I do not care whether you pray differently or not. Then he told them that the way he (may Allah be pleased with him) prayed was in accordance with the Sunnah of the Prophet (blessings and peace of Allah be upon him). This hadith indicates that we are urged to hold fast to the Sunnah of the Prophet (blessings and peace of Allah be upon him) even if it differs from what people do. It also indicates that it is prescribed to say takbir when getting up and when changing posture in the prayer..