If a thing is lent for use for a specified time or purpose, it must be returned to the lender without demand as soon as the time has expired or the purpose has been accomplished. In other cases it need not be returned until demanded.
Mont. Code Ann. § 70-7-113
When returnable without demand
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.