Hadith #5110 (Sahih al-Bukhari)
Book: Divorce
Narrator(s): Al-Miswer bin Makhrama
Grade: Sahih

Subai’a Al-Aslamiya gave birth to a child a few days after the death of her husband. She came to the Prophet and asked permission to remarry, and the Prophet (ﷺ) gave her permission, and she got married.

Source: https://parallelquran.com/hadith/sahih-al-bukhari-5110/