Musannaf Ibn Abi Shayba 13:3113

Abu Bakr narrated to us, he said: Yahya ibn Adam narrated to us, he said: Sufyan narrated to us, from Musa ibn Abi Aisha, from Abu Abd al-Rahman, from Ibrahim, who said: Everything that is weighed, then it is like for like; but if they differ, then increase and let it be increased. And everything that is measured, then it is like for like; but if they differ, then increase and let it be increased.