Sahih Muslim Book 40, Hadith Number 6791.

Chapter : He who would love to have a glimpse of the sacred face of the Holy Prophet (may peace be upon him) even at the cost of his whole property and his family.

Abu Huraira reported Allah’s Messenger (may peace be upon him) as saying: The people most loved by me from amongst my Ummah would be those who would come after me but everyone amongst them would have the keenest desire to catch a glimpse of me even at the cost of his family and wealth.