La. R.S. 13:4359

In all judicial sales when the terms of the sale are not fixed in the writ, judgment, or order of sale, before the advertisement the party provoking the sale may instruct the officer conducting the sale as to what portion of the purchase price is to be paid at the moment of adjudication. In default of such instruction, the officer may fix the amount, which in no case shall be less than ten per cent. The portion of the purchase price to be paid at the adjudication shall be stated in the advertisement.