It wasnarrated that 'Aishah said:
"Asma' bint 'Umais gave birth atShajarah, and the Messenger of Allah (ﷺ) told Abu Bakr to tell herto take a bath and begin the Talbiyah." (FR)
English reference (FR): Vol. 4, Book 25, Hadith 2911 (FR)
Arabic reference (FR): Book 25, Hadith 3023 (FR)