N.D. Cent. Code § 45-15-06: (306) Partner's liability

1.Except as otherwise provided in subsection 2 and in chapter 45-22, all partners are liable jointly and severally for all obligations of the partnership unless otherwise agreed by the claimant or provided by law.

2.A person admitted as a partner into an existing partnership is not personally liable for any partnership obligation incurred before the person's admission as a partner.