The Book of Mosques and Places of Prayer
5/19. Chapter:
As-Sahw (forgetfulness) in prayer and prostrating to compensate for it
Sahih Muslim
حَدَّثَنَاهُ مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، حَدَّثَنَا شُعْبَةُ، عَنْ مَنْصُورٍ، بِهَذَا الإِسْنَادِ وَقَالَ " فَلْيَتَحَرَّ أَقْرَبَ ذَلِكَ إِلَى الصَّوَابِ " .
This hadith has been narrated by Mansur with the same chain of transmitters and said: " He should aim at correctness and that is right."
Reference : Sahih Muslim 572eIn-book reference : Book 5, Hadith 116USC-MSA web (English) reference : Book 4, Hadith 1172