1 Kings 5:14

And he sent them to Lebanon, ten thousand a month in shifts: they were one month in Lebanon and two months at home; Adoniram was in charge of the labor force.

Surrounding context

5:13 Then King Solomon raised up a labor force out of all Israel; and the labor force was thirty thousand men.

5:14 And he sent them to Lebanon, ten thousand a month in shifts: they were one month in Lebanon and two months at home; Adoniram was in charge of the labor force.

5:15 Solomon had seventy thousand who carried burdens, and eighty thousand who quarried stone in the mountains,

Translation and sources