It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that Mu'awiyah (may Allah be pleased with him) (asked) about tamattu' in Hajj, and Ibn Abbas (may Allah be pleased with them both) said: The Messenger of Allah (peace and blessings be upon him) did it.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10693
Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: The Messenger of Allah (peace and blessings be upon him) slept until the sound of his breathing was heard, then he ((peace and blessings be upon him)) prayed without purification.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10694
It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) came out intending to pray. On the way he passed by a cooking pot, took a bone (with meat) from it and ate it, then went on to the prayer without performing ablution.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10695