The Book on Salutations and Greetings (Kitab As-Salam)
Muslim :: Book 26 : Hadith 5378
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: Five are the rights of a Muslim over his brother: responding to salutation, saying Yarhamuk Allah when anybody sneezes and says al-Hamdulillah, visiting the sick. following the bier. ' Abd al-Razzaq said that this hadith has been transmitted as mursal hadith from Zuhri and he then substantiated it on the authority of Ibn Musayyib.