Sahih Bukhari
Sahih Bukhari Volume 002, Book 023, Hadith Number 332.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 23. Funerals (Al-Janaa'iz)
Narated By Abu Huraira : I heard Allah's Apostle saying, "The rights of a Muslim on the Muslims are to follow the funeral processions, to accept invitation and to reply the sneezer. (see Hadith No 331)