Hadith 1179
Chapter 1: What one who has entered Ihram for Hajj or Umrah is permitted to wear, and what is not permissible, and perfume is forbidden for him - كتاب الحج
وَحَدَّثَنَا أَحْمَدُ بْنُ عَبْدِ اللَّهِ بْنِ يُونُسَ، حَدَّثَنَا زُهَيْرٌ، حَدَّثَنَا أَبُو الزُّبَيْرِ، عَنْ جَابِرٍ، - رضى الله عنه - قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ لَمْ يَجِدْ نَعْلَيْنِ فَلْيَلْبَسْ خُفَّيْنِ وَمَنْ لَمْ يَجِدْ إِزَارًا فَلْيَلْبَسْ سَرَاوِيلَ " .
Jabir (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying:
He who does not find shoes to wear may wear socks, and he who does not find lower garment to wear may put on trousers.
Reference : Sahih Muslim 1179
In-book reference : Book 15, Hadith 7
USC-MSA web (English) reference : Book 7, Hadith 2653