Jarir bin 'Abdul Hameed al-Razi جرير بن عبد الحميد أبو عبد الله الضبي · The Chapters on Divorce

"Subai'ah Aslamiyyah bint Harith gave birth twenty-odd days after her husband died. When her postnatal bleeding ended, she adorned herself, and was criticized for doing that. Her case was mentioned to the Prophet (ﷺ) and he said: 'If she does that, then her waiting period is over."'