Musannaf Ibn Abi Shaybah 11087 — Buried treasure found by a group

Huzayl narrates that a man came to Sayyiduna Abdullah (bin Mas'ud) (may Allah be pleased with him) and said: I have found some hundreds of dirhams. Sayyiduna Abdullah said to him: I do not think that what you found is wealth of the Muslims; rather, I think it is ancient buried wealth (rikaz). So pay one-fifth of it into the public treasury (bayt al-mal), and all the rest of the wealth is yours.