Indian Partnership Act, 1932
CHAPTER V : INCOMING AND OUTGOING PARTNERS
31. Introduction of a partner
Subject to contract between the partners and to the provisions of section 30, no person shall be introduced as a partner into a firm without the consent of all the existing partners.
Subject to the provisions of section 30, a person who is introduced as a partner into a firm does not thereby become liable for any act of the firm done before he became a partner.