Sunan an-Nasa'i, Book 48, Hadith 297 (In-Book) ⓘ
It was narrated that Ibn 'Umar said: "The Messenger of Allah [SAW] said: 'Whoever drags his garment out of pride, Allah will not look at him.' Umm Salamah said: 'O Messenger of Allah, what should women do with their hems?' He said: 'Let it down a hand span.' She said: 'But then their feet will show.' He said: 'Let it down a forearm's length, but no more than that.'"
أَخْبَرَنَا نُوحُ بْنُ حَبِيبٍ، قَالَ حَدَّثَنَا عَبْدُ الرَّزَّاقِ، قَالَ حَدَّثَنَا مَعْمَرٌ، عَنْ أَيُّوبَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ جَرَّ ثَوْبَهُ مِنَ الْخُيَلاَءِ لَمْ يَنْظُرِ اللَّهُ إِلَيْهِ " . قَالَتْ أُمُّ سَلَمَةَ يَا رَسُولَ اللَّهِ فَكَيْفَ تَصْنَعُ النِّسَاءُ بِذُيُولِهِنَّ قَالَ " تُرْخِينَهُ شِبْرًا " . قَالَتْ إِذًا تَنْكَشِفَ أَقْدَامُهُنَّ . قَالَ " تُرْخِينَهُ ذِرَاعًا لاَ تَزِدْنَ عَلَيْهِ " .
also referenced under: Hadith 5336 (Reference) & Volume 6, Book 48, Hadith 5338 (DarusSalam)