Abu Dawud
The Rites of Hajj
Book Number: 004 / Hadith Number: 1827
Narated By 'Aisha, Ummul Mu'minin : Salim ibn Abdullah said: Abdullah ibn Umar used to do so, that is to say, he would cut the shoes of a woman who put on ihram; then Safiyyah, daughter of AbuUbayd, reported to him that 'Aisha (may Allah be pleased with her) narrated to her that the Apostle of Allah (pbuh) gave licence to women in respect of the shoes (i.e. women are not required to cut the shoes). He, therefore, abandoned it.