Hadith 5:968
Narrated to us Abd al-Rahim, from Ibn Abi Khalid and Zakariyya, from al-Sha'bi, that the Prophet, may God bless him and grant him peace, said regarding buried treasure (al-rikaz): "One-fifth."
حدثنا عبد الرحيم عن بن أبي خالد وزكريا عن الشعبي أن النبي صلى الله عليه وسلم قال في الركاز الخمس