The Book of Mosques and Places of Prayer
5/19. Chapter:
As-Sahw (forgetfulness) in prayer and prostrating to compensate for it
Sahih Muslim
وَحَدَّثَنَاهُ ابْنُ أَبِي عُمَرَ، حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ عَبْدِ الصَّمَدِ، عَنْ مَنْصُورٍ، بِإِسْنَادِ هَؤُلاَءِ وَقَالَ " فَلْيَتَحَرَّ الصَّوَابَ " .
This hadith has been narrated by Mansur and he said: " He should aim at correctness."
Reference : Sahih Muslim 572gIn-book reference : Book 5, Hadith 118USC-MSA web (English) reference : Book 4, Hadith 1174