Musnad Ahmad 30:2667

Yazid narrated to us, he said: Muhammad ibn Ishaq informed us, from Abu al-Zinad, from al-A’raj, from Abu Hurayrah, who said: The Messenger of Allah, peace and blessings of Allah be upon him, said: "A woman will not remain straight for you upon one character. She is only like a rib; if you straighten it, you will break it, and if you leave it, you will enjoy it while there is crookedness in it."