مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1761
Hadeeth of 'Abdullah bin Ja'far bin Abi Talib
It was narrated from "Abdullah bin Ja"far that the Messenger of Allah (ﷺ) said: "Whoever is not sure about his prayer, let him prostrate twice after he says the salam."
Musnad Ahmad 1761Da'if (Darussalam) [; see 1747]