Alqama bin Qays علقمة بن قيس بن عبد الله · The Book of Divorce

"That a woman from Aslam who was called Subai'ah was married to her husband, and he died while she was pregnant. Abu As-Sanabil bin Ba'kak proposed to her but she refused to marry him. He said: 'You cannot get married until you have observed 'Iddah for the longer of the two periods.' Approximately twenty days later she gave birth. She went to the Messenger of Allah and he said: 'Get married.'"

'Why do I see you adorned? Perhaps you want to get married, but by Allah you will not get married until four months and ten days have passed.' Subai'ah said: 'When he said that to me, I put on my clothes in the evening and went to the Messenger of Allah and asked him about that. He ruled that it had become permissible for me to marry when I gave birth, and he told me to get married if I…