Exodus 16:36

Now an omer is the tenth part of an ephah.
— Exodus 16:36, King James Version

In other translations

World English Bible (WEB)

Now an omer is the tenth part of an ephah.

American Standard Version (ASV)

Now an omer is the tenth part of an ephah.

Young's Literal Translation (YLT)

and the omer is a tenth of the ephah.