Umdah Al-ahkam Vol. 3 Hadith No. 460 ~upd~ -
The Prophet (peace be upon him) looked at the half-hidden short measure on the table. "You have concealed, Yazid. And by concealing, you have not only cheated your brother but have expelled the blessing (Barakah) from your wealth. What good is silver if there is no blessing in it?"
The hadith establishes the permissibility of where: Umdah Al-ahkam Vol. 3 Hadith No. 460