حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّهُ قَالَ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم أَنْ يَلْبَسَ الْمُحْرِمُ ثَوْبًا مَصْبُوغًا بِزَعْفَرَانٍ أَوْ وَرْسٍ وَقَالَ ‏"‏ مَنْ لَمْ يَجِدْ نَعْلَيْنِ فَلْيَلْبَسْ خُفَّيْنِ وَلْيَقْطَعْهُمَا أَسْفَلَ مِنَ الْكَعْبَيْنِ ‏"‏ ‏.‏

Yahya related to me from Malik from 'Abdullah ibn Dinar thatAbdullah ibn Umar said, "The Messenger of Allah, may Allah bless himand grant him peace, forbade anyone in ihram to wear a garment whichhad been dyed with saffron or yellow dye, and said, 'Anyone thatcannot find sandals can wear leather socks, but he should cut them offbelow the ankles.' " Translation Not Available

Book Ref: Muwatta Imam Malik Book 20 Hadith 716
Web Ref:  Muwatta Imam Malik Book 20 Hadith 9