Deuteronomy 25:13-15

Young's Literal Translation

¹³ `Thou hast not in thy bag a stone and a stone, a great and a small.

¹⁴ Thou hast not in thy house an ephah and an ephah, a great and a small.

¹⁵ Thou hast a stone complete and just, thou hast an ephah complete and just, so that they prolong thy days on the ground which Jehovah thy God is giving to thee;