Musnad Ahmad 30:1079

The Messenger of Allah, may Allah bless him and grant him peace, said: "The first group to enter Paradise, their forms are like the form of the moon on the night of the full moon. They do not spit therein, nor do they blow their noses therein, nor do they defecate therein. Their vessels and their combs are of gold and silver, and their incense burners are of aloe wood, and their sweat is musk. And for every one of them are two wives; the marrow of their shins is visible from beneath the flesh due to [their] beauty. There is no disagreement among them, nor mutual hatred; their hearts are as the heart of one man. They glorify Allah morning and evening."