Without prejudice to the provisions of article 1848, a person who has contributed to the capital of a business conducted by a person or partnership erroneously believing that he has become a limited partner in a limited partnership, is not, by reason of his exercise of the rights of a limited partner, a general partner with the person or in the partnership carrying on the business, or bound by the obligations of such person or partnership, provided that on ascertaining the mistake he promptly renounces his interest in the profits of the business, or other compensation by way of income.