Hadith 1251
´It was narrated from 'Abdullah bin Ja'far that :` The Messenger of Allah (ﷺ) said: "Whoever has doubt during his prayer, let him prostrate twice after he said the taslim."
Hadith 1252
´It was narrated from 'Abdullah bin Ja'far that:` The Messenger of Allah (ﷺ) said: "Whoever has doubt during his prayer, let him prostrate twice." (One of the narrators) Hajjaj said: "After he has said the taslim." (Another of them) Rawh said: "While he is sitting."
Hadith 5043
´It was narrated from 'Aishah that:` The Messenger of Allah [SAW] said: "Ten things are part of the Fitrah: Trimming the mustache, trimming the nails, washing the joints, letting the beard grow, using the Siwak, rinsing the nose, plucking the armpit hairs, shaving the pubes, and washing with water (after relieving oneself)." Mus'ab bin Shaibah said: "I have forgotten the tenth, unless it was rinsing the mouth."