Sunan an-Nasa'i
Book 24: The Book of Hajj
كتاب مناسك الحج
467 hadith in this book
Chapter 37 Concession Allowing Khuffs in Ihram for the one who Cannot Find any Sandals
باب الرُّخْصَةِ فِي لُبْسِ الْخُفَّيْنِ فِي الإِحْرَامِ لِمَنْ لاَ يَجِدُ نَعْلَيْنِ .
It was narrated that Ibn 'Abbas said: "I heard the Messenger of Allah (ﷺ) say; 'If you cannot find an Izar then wear pants, and if you cannot find sandals then wear khuffs, but cut them so that they come lower than the ankles.
أَخْبَرَنَا إِسْمَاعِيلُ بْنُ مَسْعُودٍ، قَالَ حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ، قَالَ أَنْبَأَنَا أَيُّوبُ، عَنْ عَمْرٍو، عَنْ جَابِرِ بْنِ زَيْدٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " إِذَا لَمْ يَجِدْ إِزَارًا فَلْيَلْبَسِ السَّرَاوِيلَ وَإِذَا لَمْ يَجِدِ النَّعْلَيْنِ فَلْيَلْبَسِ الْخُفَّيْنِ وَلْيَقْطَعْهُمَا أَسْفَلَ مِنَ الْكَعْبَيْنِ " .
Hadith text, translations and grading are courtesy of Sunnah.com.