Indian Trusts Act, 1882
36. General authority of trustee
In addition to the powers expressly conferred by this Act and by the instrument of trust, and subject to the restriction, if any, contained in such instrument, and to the provisions of section 17, a trustee may do all acts which are reasonable and proper for the realization, protection or benefit of the trust-property, and for the protection or support of a beneficiary who is not competent to contract.
Except with the permission of a principal civil court of original jurisdiction, no trustee shall lease trust-property for a term exceeding twenty-one years from the date of executing the lease, nor without reserving the best yearly rent than can be reasonably obtained.