(196) باب فِي الرَّجُلِ يَتَطَوَّعُ فِي مَكَانِهِ الَّذِي صَلَّى فِيهِ الْمَكْتُوبَةَ
Narrated AbuHurayrah:
The Prophet (ﷺ) said: Cannot any one of you (according to the version of the narrator AbdulWarith) step forward or backward or at his right or left. The version of Hammad added: during prayer; that is, in supererogatory prayer. (RU)
Reference (RU): Sunan Abi Dawud 1006 (RU)
In-book reference (RU): Book 2, Hadith 617 (RU)
English translation (RU): Book 3, Hadith 1001 (RU)