Musnad Ahmad 27:1019

Yazid narrated to us, Al-Awwam informed us, Habib ibn Abi Thabit informed me, from Ibn Umar, from the Prophet, may Allah bless him and grant him peace, who said: "Do not prevent your women from the mosques, and their houses are better for them." A son of Abdullah ibn Umar said: "By Allah, we will indeed prevent them." Ibn Umar said: "I narrate to you from the Messenger of Allah, may Allah bless him and grant him peace, and you say what you say?"