Abdullah bin Ibrahim bin Qariz narrated: I saw Abu Huraira (may Allah be pleased with him) performing ablution on the roof of the mosque. He had eaten pieces of cheese, so he performed ablution because of them. I asked: Do you perform ablution because of eating them? He replied: I heard the Messenger of Allah (peace and blessings be upon him) say, "Perform ablution after eating anything cooked on fire."