Muwatta Imam Malik Book of Shortening the Prayer, Hadith 39
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.
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يَكْرَهُ أَنْ يَمُرَّ، بَيْنَ أَيْدِي النِّسَاءِ وَهُنَّ يُصَلِّينَ .