Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrated that I heard the Prophet Muhammad (peace and blessings be upon him) delivering a sermon at Arafat, saying: Whoever does not have sandals while in Ihram should wear leather socks, and whoever does not have an izar (waist-wrapper) should wear trousers.
Hadith Referenceاللؤلؤ والمرجان / كتاب الحج / 732
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 28 كتاب جزاء الصيد: 15 باب لبس الخفين للمحرم إذا لم يجد النعلين»