SDCL § 55-2-21: Trustee's right to distribute income or principal in trust arising under law or terms of first trust not abridged.

No provision of §§ 55-2-15 to 55-2-20, inclusive, may be construed to abridge the right of any trustee who has power to distribute income or principal in further trust which arises under statute, common law, or the terms of the first trust.