Ibn ‘Umar said that the Prophet made a prostration in the noon prayer, then stood up and bowed; and they thought he recite Tanzil, i.e. sura as-Sajda (Al-Qur’an; 32).
‘Uqba b. ‘Amir told that he said, “Messenger of God, sura al-Hajj has been given superior excellence through having two prostrations in it.” He replied, “Yes, and he who does not make the two prostrations should not recite the two verses.”
Abu Dawud and Tirmidhi transmitted it, and said this is a tradition whose isnad is not strong. Al-Masabih has “should not recite it”, as occurs in Sharh as-sunna.
God’s Messenger used to recite the Qur'an to us, and when he came to a place where a prostration should be made he said “God is most great” and prostrated himself, and we prostrated ourselves along with him.
God’s Messenger taught me fifteen prostrations, while reciting the Qur’an, including three in al-Mufassal, 1 and two in sura al-Hajj2.
1. A title given to the suras from 49 to the end, but several other suras are also mentioned: 37, 45, 47, 48, 50, 61, 67, 87, and 93. The name is most appropriately explained ay meaning that this is the section of the Qur’an which contains many shorter suras.
2. Al-Qur’an; 22