حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْقَاسِمِ، عَنْ أَبِيهِ، عَنْ أَسْمَاءَ بِنْتِ عُمَيْسٍ، أَنَّهَا وَلَدَتْ مُحَمَّدَ بْنَ أَبِي بَكْرٍ بِالْبَيْدَاءِ فَذَكَرَ ذَلِكَ أَبُو بَكْرٍ لِرَسُولِ اللَّهِ صلى الله عليه وسلم فَقَالَ ‏"‏ مُرْهَا فَلْتَغْتَسِلْ ثُمَّ لِتُهِلَّ ‏"‏ ‏.‏

Yahya related to me from Malik from Abd ar-Rahman ibn al-Qasimfrom his father from Asma bint Umays that she gave birth to Muhammadibn Abi Bakr at al-Bayda. Abu Bakr mentioned this to the Messenger ofAllah, may Allah bless him and grant him peace, and he said, "Tell herto do ghusl and then enter ihram." Translation Not Available

Book reference: Muwatta Imam Malik Book 20 Hadith 708
Web reference: Muwatta Imam Malik Book 20 Hadith 1