Sahih Muslim 1177
Sahih Muslim · Book 15: The Book of Pilgrimage · What one who has entered Ihram for Hajj or Umrah is permitted to wear, and what is not permissible, and perfume is forbidden for him
Ibn 'Umar reported that the Messenger of Allah (ﷺ) forbade the Muhrim to put on a cloth dyed in saffron or wars and he further said:
وَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى ، قَالَ قَرَأْتُ عَلَى مَالِكٍ عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ ، عَنِ ابْنِ، عُمَرَ - رضى الله عنهما - أَنَّهُ قَالَ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم أَنْ يَلْبَسَ الْمُحْرِمُ ثَوْبًا مَصْبُوغًا بِزَعْفَرَانٍ أَوْ وَرْسٍ وَقَالَ " مَنْ لَمْ يَجِدْ نَعْلَيْنِ فَلْيَلْبَسِ الْخُفَّيْنِ وَلْيَقْطَعْهُمَا أَسْفَلَ مِنَ الْكَعْبَيْنِ " .
One who does not find shoes (to wear) he may wear stockings, but (only) after trimming them below the ankles.