صحيح مسلم
Sahih Muslim
كتاب الحج
The Book of Pilgrimage
باب إِحْرَامِ النُّفَسَاءِ وَاسْتِحْبَابِ اغْتِسَالِهَا لِلإِحْرَامِ وَكَذَا الْحَائِضِ:
Chapter: The soundness of Ihram for the woman in Nifas; It is recommended for her to perform Ghusl before entering Ihram, and the same applies to one who is menstruating
2 hadith
Hadith 1209
A'isha (Allah be pleased with her) reported that Asma' bint 'Umais gave birth to Muhammad bin Abu Bakr (RA) near Dhu'I-Hulaifa. The Messenger of Allah (ﷺ) commanded Abu Bakr (RA) to convey to her that she should take a bath and then enter into the state of Ihram.
Hadith 1210
Jabir bin'Abdullah (RA) reported that when Asma' bint Umais gave birth (to a child) in Dhu'I-Hulaifa. Allah's Messenger (ﷺ) commanded Abu Bakr (RA) (to convey to her) that she should take a bath and enter into the state of Ihram.