Musnad Abu Ya'la al-Mawsili 215:1

Ishaq ibn Abi Isra'il narrated to us, Sahl ibn Ziyad al-Harbi, a Basran, trustworthy, narrated to us, he said: Al-Azraq ibn Qays narrated to me, from Abdullah ibn Nawfal—or from Abdullah ibn Buraydah, Sahl was in doubt—from Khadijah bint Khuwaylid, she said: I asked the Messenger of Allah, may Allah bless him and grant him peace, and I said: "May my father be sacrificed for you, where are my children from you?" He said: "In Paradise." She said: And I asked him, "Where are my children from my polytheist husbands?" He said: "In the Fire." I said: "Without [having performed] deeds?" He said: "Allah knows best what they would have been doing."