Muwatta Malik, Book 14, Hadith 12 (USC-MSA) ⓘ
Yahya related to me from Malik that he had heard that Abdullah ibn Umar said, "The Messenger of Allah, may Allah bless him and grant him peace, said, 'Do not forbid the female slaves of Allah from (going into) the mosques of Allah.' "
حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّهُ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ تَمْنَعُوا إِمَاءَ اللَّهِ مَسَاجِدَ اللَّهِ " .
also referenced under: Book 14, Hadith 469 (In-Book)