She mentioned women's hems to the Messenger of Allah [SAW], and the Messenger of Allah [SAW] said: "Let it down a hand span." Umm Salamah said: "But that will uncover (her feet)." He said: "Let it down a forearm's length, but no more than that."  

أَنَّهَا ذَكَرَتْ لِرَسُولِ اللَّهِ ﷺ ذُيُولَ النِّسَاءِ فَقَالَ رَسُولُ اللَّهِ ﷺ يُرْخِينَ شِبْرًا قَالَتْ أُمُّ سَلَمَةَ إِذًا يَنْكَشِفَ عَنْهَا قَالَ تُرْخِي ذِرَاعًا لاَ تَزِيدُ عَلَيْهِ  

When the Messenger of Allah ﷺ mentioned lower garment, Umm Salamah, wife of the Messenger of Allah ﷺ, asked him: And a woman, Messenger of Allah? He replied: She may hang down a span. Umm Salamah said: Still it (foot) will be uncovered. He said: Then a forearm's length, nor exceeding it.  

أَنَّ أُمَّ سَلَمَةَ زَوْجَ النَّبِيِّ ﷺ قَالَتْ لِرَسُولِ اللَّهِ ﷺ حِينَ ذَكَرَ الإِزَارَ فَالْمَرْأَةُ يَا رَسُولَ اللَّهِ قَالَ تُرْخِي شِبْرًا قَالَتْ أُمُّ سَلَمَةَ إِذًا يَنْكَشِفُ عَنْهَا قَالَ فَذِرَاعًا لاَ تَزِيدُ عَلَيْهِ  

Yahya related to me from Malik from Abu Bakr ibn Nafi from his father Nafi, the mawla of Ibn Umar that Safiyya bint Abi Ubayd informed him that Umm Salama, the wife of the Prophet ﷺ said that when the lower garment of women was mentioned to the Messenger of Allah, he said, "She lets it down a handspan." Umm Salama said, "If it leaves her uncovered?" He said, "Then the length of a forearm and let her not increase it."  

عَنْ أُمِّ سَلَمَةَ زَوْجِ النَّبِيِّ ﷺ أَنَّهَا قَالَتْ حِينَ ذُكِرَ الإِزَارُ فَالْمَرْأَةُ يَا رَسُولَ اللَّهِ قَالَ تُرْخِيهِ شِبْرًا قَالَتْ أُمُّ سَلَمَةَ إِذًا يَنْكَشِفُ عَنْهَا قَالَ فَذِرَاعًا لاَ تَزِيدُ عَلَيْهِ  

[Machine] "She mentioned to the Prophet ﷺ the beauty of certain women, so he said, 'They will be raised up a handspan.' I said, 'Then their forearms will be exposed?' He said, 'A cubit that they do not exceed.'"  

أَنَّهَا ذَكَرَتْ لِلنَّبِيِّ ﷺ ذُيُولَ النِّسَاءِ فَقَالَ «تُرْخِينَ شِبْرًا» قُلْتُ إِذَنْ تَنْكَشِفُ عَنْهُنَّ قَالَ «فَذِرَاعٌ لَا يَزِدْنَ عَلَيْهِ»