Musannaf Ibn Abi Shayba 19:428

Abu Bakr narrated to us, he said: Ibn Idris narrated to us, from ‘Asim ibn Kulayb, from his father, who said: Abu Musa said: A pregnant woman was brought to me while I was in Yemen. I questioned her, and she said: "Why do you ask about a pregnant woman who is a thayyib (previously married) without a husband? By Allah, I have not taken a lover nor have I taken a companion since I accepted Islam. But while I was sleeping in the courtyard of my house, by Allah, nothing woke me except a man who lifted me and cast into my belly something like a shooting star. Then I looked at him as he was turning away; I do not know who he was among the creation of Allah." So I wrote to ‘Umar regarding her. ‘Umar wrote back: "Bring her to me, along with some people from her tribe." He said: We met him at the season (of Hajj). He said, appearing as if he were angry: "Perhaps you have already preceded me with some action regarding the woman?" I said: "No, she is with me, along with some people from her tribe." He questioned her, and she informed him just as she had informed me. Then he questioned her tribe, and they praised her well. He said: So ‘Umar said: "A young Tihami woman who has been slept with; it has been done." He gave her a garment and commanded her tribe to treat her well.