That an al-Ansari narrated to him: The Messenger of Allah (ﷺ) said to Ja'far. He then narrated the tradition in 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).
Sunan Abi Dawud Book 5, Hadith 50