Musannaf Ibn Abi Shayba 19:25

Abu Bakr narrated to us, he said: Waki’ narrated to us, from Sufyan, from ‘Abdullah bin Abi Bakr, from ‘Amrah, from ‘Aishah, she said: "The hand is cut for a quarter of a dinar." And ‘Amrah said: "Umar cut [the hand] for a citron."