مُوَطَّأُ مَالِكٍ
Muwatta Malik 368
Shortening the Prayer
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يَكْرَهُ أَنْ يَمُرَّ، بَيْنَ أَيْدِي النِّسَاءِ وَهُنَّ يُصَلِّينَ .
Yahya related to me from Malik that he had heard that Abdullah ibn Umar used to disapprove of passing in front of women while they were praying.
Arabic/English book reference: Book 9, Hadith 39