Hadith 8:1999
Abu Bakr narrated to us, he said: Jarir narrated to us, from Mansur, from Ibrahim, who said: If a person in the state of Ihram is compelled to wear leather socks (khuffayn), he should tear them and leave in them the measure of the sandal strap, and he should cut them from below his ankles.
حدثنا أبو بكر قال حدثنا جرير عن منصور عن إبراهيم قال إذا أضطر المحرم إلى الخفين خرقهما وترك فيهما قدر الشراك ويقطعها من قبل كعبيه