Sunan Ibn Majah

It was narrated from Abu Hurairah that:The Prophet said: ""Perform ablution after (eating) that which has been changed by fir."" Ibn 'Abbas said: ""Should I do ablution after (touching) hot water?"" Abu Hurairah said: ""O son of my brother, when I narrate a Hadith of the Messenger of Allah to you, then do not try to make examples for it