עָדַף

When they measured it by the omer, he who gathered much had no excess, and he who gathered little had no shortfall. Each one gathered as much as he needed to eat.

He told them, “This is what the LORD has said: ‘Tomorrow is to be a day of complete rest, a holy Sabbath to the LORD. So bake what you want to bake, and boil what you want to boil. Then set aside whatever remains and keep it until morning.’”

As for the overlap that remains of the tent curtains, the half curtain that is left over shall hang down over the back of the tabernacle.

And the tent curtains will be a cubit longer on either side, and the excess will hang over the sides of the tabernacle to cover it.

…he shall calculate the years since its sale, repay the balance to the man to whom he sold it, and return to his property.

To redeem the 273 firstborn Israelites who outnumber the Levites,

Give the money to Aaron and his sons as the redemption price for the excess among the Israelites.”

So Moses collected the redemption money from those in excess of the number redeemed by the Levites.