Abu Dawud
Prayer
Book Number: 002 / Hadith Number: 1294
Narated By 'Urwah b. Ruwaim : An al-Ansari narrated to me: The Apostle of Allah (pbuh) said to ja'far. He then narrated the tradition in a like manner. This version has the words: "In the second prostration of the first rak'ah," in addition to the words transmitted by Mahdi b. Maimun (in the previous tradition).