Musannaf Ibn Abi Shayba 13:1193

Abu Bakr narrated to us, he said: Abu Bakr ibn Ayyash narrated to us, from Abu Husayn, he said: A dispute occurred before Abdullah ibn Utbah regarding pearls, and I was with him. Each one of the two of them brought evidence that they belonged to him. He said: So I saw Abdullah ibn Utbah moving them with his hand and saying: "They belong to the possessor; they belong to the one in whose hand they are."