Yahya related to me from Malik from 'Abdullah ibn Dinar that Abdullah ibn Umar said, "The Messenger of Allah ﷺ forbade anyone in ihram to wear a garment which had been dyed with saffron or yellow dye, and said, 'Anyone that cannot find sandals can wear leather socks, but he should cut them off below the ankles.' "
أَنَّهُ قَالَ نَهَى رَسُولُ اللَّهِ ﷺ أَنْ يَلْبَسَ الْمُحْرِمُ ثَوْبًا مَصْبُوغًا بِزَعْفَرَانٍ أَوْ وَرْسٍ وَقَالَ مَنْ لَمْ يَجِدْ نَعْلَيْنِ فَلْيَلْبَسْ خُفَّيْنِ وَلْيَقْطَعْهُمَا أَسْفَلَ مِنَ الْكَعْبَيْنِ