From Sahih Bukhari (Hadith 6138):
Narrated Abu Huraira:The Prophet (ﷺ) said, "Whoever believes in Allah and the Last Day, should serve his guest generously; and whoever believes in Allah and the Last Day, should unite the bond of kinship (i.e. keep good relation with his kith and kin); and whoever believes in Allah and the Last Day, should talk what is good or keep quiet
Reference: Bukhari 6138