Musnad Abu Ya'la al-Mawsili 108:139

And from Jabir, he said: I heard the Prophet, may Allah bless him and grant him peace, saying: "Indeed, the people of Paradise eat therein and drink, and they do not spit, nor do they urinate, nor do they blow their noses, nor do they defecate." He said: "Then what becomes of the food?" He said: "Burps and perspiration like the perspiration of musk. They are inspired to glorify and praise [Allah] just as you are inspired to breathe."