أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا حَمَّادٌ، عَنْ عَمْرٍو، عَنْ جَابِرِ بْنِ زَيْدٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ سَمِعْتُ النَّبِيَّ صلى الله عليه وسلم يَخْطُبُ وَهُوَ يَقُولُ ‏"‏ السَّرَاوِيلُ لِمَنْ لاَ يَجِدُ الإِزَارَ وَالْخُفَّيْنِ لِمَنْ لاَ يَجِدُ النَّعْلَيْنِ ‏"‏ ‏.‏ لِلْمُحْرِمِ ‏.‏

It was narrated that Ibn 'Abbas said;"I heard the Prophet delivering a khutbah and he said: 'Pants (are allowed) for one who cannot find an Izar, and Khuffs for one who cannot find sandals to wear in Ihram.;; Translation Not Available

Book Ref: Sunan An Nisai Book 24 Hadith 2671
Web Ref:  Sunan An Nisai Vol 3 Book 24 Hadith 2672