General Behavior (Kitab Al-Adab)
43/159. Chapter:
Regarding kissing the cheek
Sunan Abi Dawud
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا الْمُعْتَمِرُ، عَنْ إِيَاسِ بْنِ دَغْفَلٍ، قَالَ رَأَيْتُ أَبَا نَضْرَةَ قَبَّلَ خَدَّ الْحَسَنِ بْنِ عَلِيٍّ عَلَيْهِمَا السَّلاَمُ .
Narrated AbuNadrah: Ilyas ibn Dighfal said: I saw AbuNadrah kissing on the cheek of al-Hasan.
Reference : Sunan Abi Dawud 5221In-book reference : Book 43, Hadith 449English translation : Book 42, Hadith 5202