1599 - He said: Abu Abd Allah narrated to us, saying: Waki' narrated to us, saying: al-A'mash narrated to us, from Sulayman ibn Maysarah, from Tariq ibn Shihab, from 'Abd Allah, who said: "When a man commits a sin, a black spot is marked on his heart. If he commits another sin, another black spot is marked on his heart, until his heart becomes the color of a speckled sheep."