Sunan an-Nasa'i, Volume 2, Book 13, Hadith 1360 (DarusSalam) ⓘ
It was narrated that As-Suddi said: "I asked Anas bin Malik: 'How should I leave after I have prayed- to the right or to the left?' He said: 'I usually saw the Messenger of Allah leave to the right.'
أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا أَبُو عَوَانَةَ، عَنِ السُّدِّيِّ، قَالَ سَأَلْتُ أَنَسَ بْنَ مَالِكٍ كَيْفَ أَنْصَرِفُ إِذَا صَلَّيْتُ عَنْ يَمِينِي، أَوْ عَنْ يَسَارِي، قَالَ أَمَّا أَنَا فَأَكْثَرُ، مَا رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَنْصَرِفُ عَنْ يَمِينِهِ .
also referenced under: Hadith 1359 (Reference) & Book 13, Hadith 181 (In-Book)