Conveying and teaching religion to the people, and correcting any shortcomings, is obligatory upon every Muslim, commensurate with his level of knowledge and ability. The Tabi‘in used to keep close to the companions of the Prophet (blessings and peace of Allah be upon him) in order to learn from their knowledge, and if they made a mistake, the Sahabah (may Allah be pleased with them) would correct them. In this hadith, ‘Ikrimah, the freed slave of Ibn ‘Abbas, narrates that he saw a man – it was said that he was Abu Hurayrah (may Allah be pleased with him) – praying in Makkah at the Maqam of Ibrahim (peace be upon him). He said takbir every time he moved down and up [in the prayer]. This man found it odd, and according to a report narrated by al-Bukhari, he described the man as foolish. When he mentioned that to Ibn ‘Abbas (may Allah be pleased with him), the latter rebuked him and told him off, and he informed him that this was how the Prophet (blessings and peace of Allah be upon him) used to pray, because saying takbir at every movement, down or up, was what the Prophet (blessings and peace of Allah be upon him) used to do in his prayer. And he said to him: May you be bereft of your mother! This is a phrase that was used by way of rebuke, and Ibn ‘Abbas said it to him because he was unaware of the Sunnah, yet despite that he found it odd that someone would do it. What is meant is that the man was saying takbir every time he lowered his head and raised it during the prayer. So he said takbir every time he went down, bowing and prostrating, and every time he rose from both. But he used to say when rising from bowing: “Sami‘a Allahu limanhamidah, Rabbanawalaka al-hamd(Allah hears those who praise Him; our Lord, to You be praise),” and similar phrases that have been narrated for this point in the prayer, and he did not say takbir. This is an exception from takbir, but what is said here refers to what is most often the case, so takbir is mentioned because this is what is said in most of the movements of the prayer..