Musnad Abu Ya'la al-Mawsili 109:53

Abu Ya'la Ahmad ibn Ali ibn al-Muthanna al-Mawsili informed us, Zuhayr narrated to us, Jarir narrated to us, from al-A'mash, from Abu Sufyan, from Jabir, who said: I heard the Prophet, may Allah bless him and grant him peace, saying: "Indeed, the people of Paradise will eat therein and drink, and they will not spit, nor will they urinate, nor will they blow their noses, nor will they defecate." He said: "Then what will become of the food?" He said: "A belch and perspiration like the perspiration of musk. They will be inspired to glorify and praise [Allah] just as you are inspired to breathe."