The Book Pertaining to the Merits of the Companions (Allah Be Pleased With Them) of the Holy Prophet (May Peace Be Upon Him) (Kitab Al-Fada'il Al-Sahabah)
Muslim :: Book 31 : Hadith 5965
Abdullah b. Ja'far reported that he heard 'All say in Kulfa that Allah's Messenger (may peace be upon him) said: The best of the women of her time was Mary, daughter of 'Imran, and the best of the women of her time was Khadija, daughter of khuwailid. Abu Kuraib said that Wakil pointed towards the sky and the earth