Jami at Tirmidhi 76

Ibn Abbas narrated that : he saw the Prophet sleeping, while in the prostration position, until he snored or snorted. Then he stoodup to pray. So I said: O Messenger of Allah! You were sleeping? He said: Wudu is not required except for..

Anas bin Malik narrated: The companions of Allah's Messenger would sleep, then stand to pray, They would not perform Wudu. ..

Abu Hurairah narrated that : Allah's Messenger said: Wudu is (required) from what fire has touched, even if it be a piece of cheese. ..

Jabir narrated: Allah's Messenger went out and I went with him. He entered upon a woman from the Ansar. She slaughtered a sheep and he ate from it; and she brought a basket with ripe dates and he ate from it. Then he performed Wudu for Zuhr and..

Al-Bara bin Azib narrated: Allah's Messenger was asked about performing Wudu for camel meat. He said: Perform Wudu for it. He Was asked about Wudu after eating goat meat. So he said: Do not perform Wudu for it. ..

Busrah bint Safwan narrated that : the Prophet said: Whoever touches his penis, then he is not to pray until he performs Wudu ..