Sunan an-Nasa'i
Sunan an-Nasa'i 2541
أَخْبَرَنَا أَبُو دَاوُدَ، قَالَ حَدَّثَنَا يَحْيَى بْنُ حَمَّادٍ، قَالَ أَنْبَأَنَا أَبُو عَوَانَةَ، عَنْ فِرَاسٍ، عَنْ عَامِرٍ، عَنْ مَسْرُوقٍ، عَنْ عَائِشَةَ، رضى الله عنها أَنَّ أَزْوَاجَ، النَّبِيِّ صلى الله عليه وسلم اجْتَمَعْنَ عِنْدَهُ فَقُلْنَ أَيَّتُنَا بِكَ أَسْرَعُ لُحُوقًا فَقَالَ " أَطْوَلُكُنَّ يَدًا " . فَأَخَذْنَ قَصَبَةً فَجَعَلْنَ يَذْرَعْنَهَا فَكَانَتْ سَوْدَةُ أَسْرَعَهُنَّ بِهِ لُحُوقًا فَكَانَتْ أَطْوَلَهُنَّ يَدًا فَكَانَ ذَلِكَ مِنْ كَثْرَةِ الصَّدَقَةِ .
Abu Dawud reported: Yahya ibn Hammad narrated to us: Abu Awanah informed us, from Firas, from Amir, from Masruq, from Aishah, may Allah be pleased with her, that the wives of the Prophet ﷺ gathered with him and asked: Which of us will be the first to join you? He said: The one with the longest hand. They took a reed and began measuring their hands. Sawdah was the first of them to join him, so she was the longest-handed among them. That was because of her abundant charity.
Translation notes
The report explicitly interprets longest hand as abundant charity after mentioning their literal measuring with a reed.