Sahih Bukhari Volume 5, Book 64, Hadith 4073

حَدَّثَنَا يَحْيَى بْنُ بُكَيْرٍ، حَدَّثَنَا اللَّيْثُ، عَنْ يُونُسَ، عَنِ ابْنِ شِهَابٍ، وَقَالَ ثَعْلَبَةُ بْنُ أَبِي مَالِكٍ إِنَّ عُمَرَ بْنَ الْخَطَّابِ ـ رضى الله عنه ـ قَسَمَ مُرُوطًا بَيْنَ نِسَاءٍ مِنْ نِسَاءِ أَهْلِ الْمَدِينَةِ، فَبَقِيَ مِنْهَا مِرْطٌ جَيِّدٌ، فَقَالَ لَهُ بَعْضُ مَنْ عِنْدَهُ يَا أَمِيرَ الْمُؤْمِنِينَ أَعْطِ هَذَا بِنْتَ رَسُولِ اللَّهِ صلى الله عليه وسلم الَّتِي عِنْدَكَ‏.‏ يُرِيدُونَ أُمَّ كُلْثُومٍ بِنْتَ عَلِيٍّ‏.‏ فَقَالَ عُمَرُ أُمُّ سَلِيطٍ أَحَقُّ بِهِ‏.‏ وَأُمُّ سَلِيطٍ مِنْ نِسَاءِ الأَنْصَارِ مِمَّنْ بَايَعَ رَسُولَ اللَّهِ صلى الله عليه وسلم، قَالَ عُمَرُ فَإِنَّهَا كَانَتْ تُزْفِرُ لَنَا الْقِرَبَ يَوْمَ أُحُدٍ‏

Narrated By Tha'laba bin Abi Malik : 'Umar bin Al-Khattab distributed woollen clothes amongst some women of Medina, and a nice woollen garment remained. Some of those who were sitting with him, said, "O chief of the believers! Give it to the daughter of Allah's Apostle who is with you," and by that, they meant Um Kulthum, the daughter of 'Ali. Umar said, "Um Salit has got more right than she." Um Saht was amongst those Ansari women who had given the pledge of allegiance to Allah's Apostle. 'Umar added, "She (i.e. Um Salit) used to carry the filled water skins for us on the day of the battle of Uhud."