Musnad Ahmad 790:171

Hashim narrated to us, Shu'bah narrated to us, Abu al-Tayyah narrated to us, he said: I heard Mutarrif ibn al-Shikhkhir, from 'Imran ibn Husayn, he said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Indeed, the fewest of the inhabitants of Paradise are women."