Sahih Muslim Book 4, Hadith Number 1076.

Chapter : Change of Qibla from Bait-u’l-Manqdis to Ka’ba.

‘Aisha reported: Umm Habiba and Umm Salama made a mention before the Messenger of Allah (may peace be upon him) of a church which they had seen in Abyssinia and which had pictures in it. The Messenger of Allah (may peace be upon him) said: When a pious person amongst them (among the religious groups) dies they build a place of worship on his grave, and then decorate it with such pictures. They would be the worst of creatures on the Day of judgment in the sight of Allah.