Musannaf Ibn Abi Shayba 13:760

Abu Bakr narrated to us, he said: Abu Mu’awiyah narrated to us, from Hammad, from Mis’ar, from ‘Amr ibn ‘Abdullah ibn Wathilah, he said: Two witnesses testified before Shurayh, one of them for a larger amount and the other for a smaller amount, so he permitted their testimony for the smaller amount.