رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 798
The Book of Dress
The Description of the Length of the Qamees' Sleeves, the End of the Turban, and Prohibition of Wearing Long Garments Out of Pride and Undesirability of Wearing Them Without Pride
وَعَنْ أبى سَعِيدٍ الخدرى رضى اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: إزارة الْمُسْلِمِ إِلَى نِصْفِ السَّاقِ، وَلاَ حَرَجَ -أَوْ لاَ جُنَاحَ- فِيمَا بَيْنَهُ وَبَيْنَ الْكَعْبَيْنِ، فما كَانَ أَسْفَلَ مِنَ الْكَعْبَيْنِ فَهُوَ فِي النَّارِ، ومن جَرَّ إِزَارَهُ بَطَرًا لَمْ يَنْظُرِ اللَّهُ إِلَيْهِ .((رَوَاهُ أَبُو دَاوُد))
Abu Sa'id Al-Khudri (May Allah be pleased with him) reported: Messenger of Allah (ﷺ) said, "The lower garment of a believer should be half way below the knees. He is guilty of no sin if they are up to the ankles. That which is below the ankles is in the Fire (of Hell). Allah will not look at one who allows his lower garment to trail out of vanity. [Abu Dawud].
Riyad as-Salihin, 798