사히흐 알부하리 #12
Sahih (Authentic)
A man asked the Prophet (ﷺ) , "What sort of deeds or (what qualities of) Islam are good?" The Prophet (ﷺ) replied, 'To feed (the poor) and greet those whom you know and those whom you do not Know (See Hadith No)
전승 사슬 (이스나드)
Narrated 'Abdullah bin 'Amr