حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنِ الْعَلاَءِ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ أَبِيهِ، قَالَ قُلْتُ لأَبِي سَعِيدٍ هَلْ سَمِعْتَ مِنْ، رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ شَيْئًا فِي الإِزَارِ قَالَ نَعَمْ سَمِعْتُ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ يَقُولُ ‏"‏ إِزْرَةُ الْمُؤْمِنِ إِلَى أَنْصَافِ سَاقَيْهِ لاَ جُنَاحَ عَلَيْهِ مَا بَيْنَهُ وَبَيْنَ الْكَعْبَيْنِ وَمَا أَسْفَلَ مِنَ الْكَعْبَيْنِ فِي النَّارِ ‏"‏ ‏.‏ يَقُولُ ثَلاَثًا ‏"‏ لاَ يَنْظُرُ اللَّهُ إِلَى مَنْ جَرَّ إِزَارَهُ بَطَرًا ‏"‏ ‏.‏

It wasnarrated from ‘Ala bin ‘Abdur-Rahman that his father said: “Isaid to Abu Sa’eed: ‘Did you hear anything from the Messenger ofAllah(PBUH) concerning the lower wrap?’ He said: ‘Yes. I heardthe Messengerof Allah (PBUH) say: ‘The lower wrap of the believershould come tomid-calf, but there is no sin on him if it comesbetween that pointand the ankle. But whatever is lower than theankle is in the Fire.’And he said three times: ‘Allah will notlook at the one who lets hislower wrap drag out of vanity.’” Translation Not Available

Book Ref: Sunan Ibn Majah Book 32 Hadith 3573
Web Ref:  Sunan Ibn Majah Vol 4 Book 32 Hadith 3573