No member of a partnership which owns or leases the racing qualities of a horse shall assign his share or any part of or interest in it without the written consent of the other partners. No assignment of an interest in a partnership, which, by ownership or lease, controls the racing qualities of a horse, will be accepted if the effect of the assignment would be to create a partnership which would not be accepted under the terms of section 4220.1.
N.Y. Comp. Codes R. & Regs. Tit. 9 § 4220.7