The Book of Virtue, Good Manners and Joining of the Ties of Relationship (Kitab Al-Birr was-Salat-I-wa'l-Adab)
Muslim :: Book 32 : Hadith 6221
Abu Huraira reported Allah's Messenger (may peace be upqn him) as saying: Verily Allah does not look to your faces and your wealth but He looks to your heart and to your deeds.