“The Messenger of Allah ﷺ commanded us to bring them (the women) out on the day of Fitr and the day of Nahr.” Umm ‘Atiyyah said: “We said: ‘What if one of them does not have an outer covering?’ He said: ‘Let her sister share her own outer covering with her.’”
أَمَرَنَا رَسُولُ اللَّهِ ﷺ أَنْ نُخْرِجَهُنَّ فِي يَوْمِ الْفِطْرِ وَالنَّحْرِ قَالَ قَالَتْ أُمُّ عَطِيَّةَ فَقُلْنَا أَرَأَيْتَ إِحْدَاهُنَّ لاَ يَكُونُ لَهَا جِلْبَابٌ قَالَ فَلْتُلْبِسْهَا أُخْتُهَا مِنْ جِلْبَابِهَا