Musnad Ahmad 33:652

Musa narrated to us, Ibn Lahi'ah informed us, from Abu al-Zubayr, from Jabir, that he heard the Prophet, peace and blessings of Allah be upon him, saying: "The people of Paradise will eat therein and drink, and they will not blow their noses, nor will they defecate, nor will they urinate. Their food will only be a belch, [with] a perspiration like the perspiration of musk. They will be inspired to glorify and praise [Allah], just as they are inspired to breathe."