حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، قَالَ قَرَأْتُ عَلَى مَالِكٍ عَنْ نَافِعٍ، وَعَبْدِ اللَّهِ بْنِ دِينَارٍ، وَزَيْدِ، بْنِ أَسْلَمَ كُلُّهُمْ يُخْبِرُهُ عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ لاَ يَنْظُرُ اللَّهُ إِلَى مَنْ جَرَّ ثَوْبَهُ خُيَلاَءَ ‏"‏ ‏.‏
Translation
Ibn 'Umar reported

I happened to pass before Allah's Messenger (may peace be upon bin) with my lower garment trailing (upon the ground). He said: 'Abdullah, tug up your lower garment,, I tugged it up, and he again said: Tug it still further, and I tugged it still further and I went on tugging it afterward, whereupon some of the people said: To what extent? Thereupon he said: To the middle of the shanks.