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." (ES)
English reference (ES): Vol. 4, Book 25, Hadith 2911 (ES)
Arabic reference (ES): Book 25, Hadith 3023 (ES)