He heard the Prophet [SAW] say in 'Arafat: "Whoever cannot find an Izar (waist wrapper), let him wear trousers, and whoever cannot find sandals, let him wear Khuffs (leather socks)." (Using translation from Nasāʾī 5325)
أَنَّهُ سَمِعَ النَّبِيَّ ﷺ بِعَرَفَاتٍ فَقَالَ «مَنْ لَمْ يَجِدْ إِزَارًا فَلْيَلْبَسْ سَرَاوِيلَ وَمَنْ لَمْ يَجِدْ نَعْلَيْنِ فَلْيَلْبَسْ خُفَّيْنِ»