Hadith 566
Chapter 203: What Has Been Narrated Concerning Women Leaving (Their House) For The Masjid - كتاب الصلاة
حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ، حَدَّثَنَا حَمَّادٌ، عَنْ أَيُّوبَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ تَمْنَعُوا إِمَاءَ اللَّهِ مَسَاجِدَ اللَّهِ " .
Ibn ‘Umar reported the Messenger of Allah (May peace be upon him) as saying; Do not prevent the female servant your women from visiting the mosques of Allah.
Reference : Sunan Abi Dawud 566
In-book reference : Book 2, Hadith 176