كتاب مناسك الحج
Read the English translation first, with the original Arabic directly underneath.
It was narrated that Ibn 'Umar said:
"A man came to the Prophet (ﷺ) and said: 'What should we wear when we enter Ihram?' He said: 'Do not wear shirts, or 'Imamahs, or burnouses, or pants, or Khuffs unless there are no sandals; if there are no sandals, then wear Khuffs that come beneath the ankles. And (do not wear) any garment that has been dyed with Wars or saffron, or has been touched by Wars or saffron.
لاَ تَلْبَسِ الْقَمِيصَ وَلاَ الْعَمَائِمَ وَلاَ الْبَرَانِسَ وَلاَ السَّرَاوِيلاَتِ وَلاَ الْخِفَافَ إِلاَّ أَنْ لاَ يَكُونَ نِعَالٌ فَإِنْ لَمْ يَكُنْ نِعَالٌ فَخُفَّيْنِ دُونَ الْكَعْبَيْنِ وَلاَ ثَوْبًا مَصْبُوغًا بِوَرْسٍ أَوْ زَعْفَرَانٍ أَوْ مَسَّهُ وَرْسٌ أَوْ زَعْفَرَانٌ