ذِكْرُ الزَّجْرِعَنْ لُبْسِ الْمُحْرِمِ أَجْنَاسًا مِنَ الثِّيَابِ الْمَعْلُومَةِ
a man asked the Messenger of Allah what garments we should wear when we enter Ihram. He said: "Do not wear shirts, or pants, or 'Imamahs, or burnouses, or Khuffs unless someone does not have any sandals, in which case he should wear Khuffs that come beneath the ankles. And do not wear any garment that has been touched by (dyed with) Wars or saffron. (Using translation from Nasāʾī 2675)
رَجُلٌ يَا رَسُولَ اللَّهِ مَا نَلْبَسُ مِنَ الثِّيَابِ إِذَا أَحْرَمْنَا قَالَ «لَا تَلْبَسُوا الْقُمُصَ وَلَا السَّرَاوِيلَاتِ وَلَا الْعَمَائِمَ وَلَا الْبَرَانِسَ وَلَا الْخِفَافَ إِلَّا أَنْ يَكُونَ لَيْسَ لَهُ نَعْلَانِ فَلْيَلْبَسِ الْخُفَّيْنِ أَسْفَلَ مِنَ الْكَعْبَيْنِ وَلَا تَلْبَسُوا مِنَ الثِّيَابِ شَيْئًا مَسَّهُ الزَّعْفَرَانُ وَالْوَرْسُ»