Musnad Ahmad 30:257

Sufyan narrated to us, from Ayyub, from Muhammad: The men and women disputed as to which of them would be more numerous in Paradise. Abu Hurairah said: Abu al-Qasim (peace and blessings of Allah be upon him) said: "The first group to enter Paradise will be like the moon on the night of the full moon, then those who follow them will be like the most brilliant shining star. Each man among them will have two wives; the marrow of their shins will be visible from beneath the flesh, and there will be no one unmarried in Paradise."