عَنِ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُمَا قَالَ: خَطَبَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ وَقَالَ: ((إِذَا لَمْ يَجِدِ الْمُحْرِمُ إِزَارًا فَلْيَلْبَسِ السَّرَاوِيلَ، وَإِذَا لَمْ يَجِدِ النَّعْلَيْنِ فَلْيَلْبَسِ الْخُفَّيْنِ))
Narrated from Sayyiduna Abdullah bin Abbas, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, delivered a sermon and said: When a person in Ihram does not find a sheet, he may wear trousers, and similarly, when he does not find shoes, he may wear leather socks.