Matlab bin Abdullah says that once Hazrat Ibn Abbas (may Allah be pleased with them) said: "Should I perform a new ablution after eating those things which I find lawful in the Noble Qur'an?" Upon this, Hazrat Abu Hurairah (may Allah be pleased with him) gathered the pebbles lying in front of him and said: "I bear witness, as many times as the number of these pebbles, that the Noble Prophet (peace and blessings be upon him) said: Perform ablution after eating anything cooked on fire."