That is, the recitation of Ibn Mas'ud.
How can anyone say of a recitation recommended by the Messenger of Allah, peace and blessings be upon him—after its soundness and its establishment from Ibn Mas'ud—that the prayer is invalid if it is recited?
Then he bows, saying the takbir …
His statement, “Then he bows, saying the takbir,” means that after recitation, he bows while saying the takbir. Regarding his words, “Then he bows,” we say the same as we said concerning “Then he recites after al-Fatihah”: it indicates sequence with a slight interval. Thus, before bowing, one should pause briefly—not for a long time, but only long enough for his breath to return. This is reported in the hadith of Samurah ibn Jundub, may Allah be pleased with him: the Messenger of Allah, peace and blessings be upon him, would observe two pauses: when he entered the prayer, and when he had finished reciting the Opening of the Book and a surah, before bowing. 'Imran ibn Husayn disputed this, so they wrote to Ubayy in Medina concerning it. He said, “Samurah spoke the truth.” (1)
His statement, “He bows”: bowing is to bend, specifically to bend the back. This bowing is intended as an act of reverence for Allah, for this posture is one of the forms of reverence. That is why people would do it before kings, dignitaries, and masters: they would bend before them, and perhaps bow, or even prostrate—may Allah protect us. Thus, bowing is a posture that indicates the reverence of the one who bows before the one to whom he bows. Hence, the Prophet, peace and blessings be upon him, said: “As for bowing, then magnify therein the Lord