Al-Adab Al-Mufrad, Book 42, Hadith 966 (English) ⓘ
Salama ibn Wardan said, "I saw Anas ibn Malik shake hands with some people and he asked me, 'And who are you?' I said, 'The mawla of the Banu Layth.' He stroked my head three times and said, 'May Allah bless you.'"
حَدَّثَنَا ابْنُ شَيْبَةَ، قَالَ: حَدَّثَنَا ابْنُ نُبَاتَةَ، عَنْ سَلَمَةَ بْنِ وَرْدَانَ قَالَ: رَأَيْتُ أَنَسَ بْنَ مَالِكٍ يُصَافِحُ النَّاسَ، فَسَأَلَنِي: مَنْ أَنْتَ؟ فَقُلْتُ: مَوْلًى لِبَنِي لَيْثٍ، فَمَسَحَ عَلَى رَأْسِي ثَلاَثًا وَقَالَ: بَارَكَ اللَّهُ فِيكَ.
also referenced under: Hadith 966 (Reference) & Book 42, Hadith 2 (In-Book)