كتاب الْمَسَاجِدِ وَمَوَاضِعِ الصَّلاَةِ
5  
The Book of Mosques and Places of Prayer
(19)
Chapter: As-Sahw (forgetfulness) in prayer and prostrating to compensate for it
(19)
باب السَّهْوِ فِي الصَّلاَةِ وَالسُّجُودِ لَهُ ‏
Sahih Muslim 572 c

This hadith is reported by Mansur with the same chain of transmitters, but with these words:

" He should aim at correct (prayer) and it is advisable."
وَحَدَّثَنَاهُ عَبْدُ اللَّهِ بْنُ عَبْدِ الرَّحْمَنِ الدَّارِمِيُّ، أَخْبَرَنَا يَحْيَى بْنُ حَسَّانَ، حَدَّثَنَا وُهَيْبُ بْنُ خَالِدٍ، حَدَّثَنَا مَنْصُورٌ، بِهَذَا الإِسْنَادِ وَقَالَ مَنْصُورٌ ‏ "‏ فَلْيَنْظُرْ أَحْرَى ذَلِكَ لِلصَّوَابِ ‏"‏ ‏.‏
Reference : Sahih Muslim 572c
In-book reference : Book 5, Hadith 114
USC-MSA web (English) reference : Book 4, Hadith 1170
  (deprecated numbering scheme)