"The Messenger of Allah [SAW] was asked how much a woman should let her hem drag. He said: 'A hand span.' She said: 'But then it will uncover her (feet).' He said: 'A forearm's length, and no more than that.'"  

سُئِلَ رَسُولُ اللَّهِ ﷺ كَمْ تَجُرُّ الْمَرْأَةُ مِنْ ذَيْلِهَا قَالَ شِبْرًا قَالَتْ إِذًا يَنْكَشِفَ عَنْهَا قَالَ ذِرَاعٌ لاَ تَزِيدُ عَلَيْهَا  

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  

“The Messenger of Allah ﷺ was asked about how long a woman’s hem should hang down. He said: ‘A hand span.’ I said: ‘But then (her legs and feet) will be uncovered.’ He said: ‘Then a forearm’s length, but no more than that.’”  

سُئِلَ رَسُولُ اللَّهِ ﷺ كَمْ تَجُرُّ الْمَرْأَةُ مِنْ ذَيْلِهَا قَالَ شِبْرًا قُلْتُ إِذًا يَنْكَشِفَ عَنْهَا قَالَ ذِرَاعٌ 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