If a partner authorized to manage collects a demandable sum which was owed to him in his own name, from a person who owed the partnership another sum also demandable, the sum thus collected shall be applied to the two credits in proportion to their amounts, even though he may have given a receipt for his own credit only; but should he have given it for the account of the partnership credit, the amount shall be fully applied to the latter.
The provisions of this article are understood to be without prejudice to the right granted to the other debtor by article 1252, but only if the personal credit of the partner should be more onerous to him. (1684)