Sahih al-Bukhari 5804
Book 77: Dress · Narrated by Ibn `Abbas
Arabic
حَدَّثَنَا أَبُو نُعَيْمٍ، حَدَّثَنَا سُفْيَانُ، عَنْ عَمْرٍو، عَنْ جَابِرِ بْنِ زَيْدٍ، عَنِ ابْنِ عَبَّاسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " مَنْ لَمْ يَجِدْ إِزَارًا فَلْيَلْبَسْ سَرَاوِيلَ، وَمَنْ لَمْ يَجِدْ نَعْلَيْنِ فَلْيَلْبَسْ خُفَّيْنِ ".
English translation
Narrated Ibn `Abbas:The Prophet (ﷺ) said, "Whoever cannot get an Izar, can wear trousers, and whoever cannot wear sandals can wear Khuffs (socks made from thick fabric or leather)
Reference: Sahih al-Bukhari 5804, Book of Dress. English translation by Dr. Muhammad Muhsin Khan.