This can easily be found by a quick web search: https://help.marriott.com/s/article/Article-22242

Marriott Bonvoy® Members can remain active in the Marriott Bonvoy® Loyalty Program and retain accumulated Marriott Bonvoy® Points by earning Marriott Bonvoy® Points or Miles, redeeming Marriott Bonvoy® Points, or purchasing Marriott Bonvoy® Points (as described in 2.9) in the Marriott Bonvoy® Loyalty Program at least once every twenty-four (24) months, all subject to the exceptions described below.
The following Activities do not count toward maintaining an Active Status:

• Gifting Points or transferring Marriott Bonvoy® Points to another Marriott Bonvoy® Member; however Marriott Bonvoy® Points to Miles or Miles to Marriott Bonvoy® Points does count toward maintaining an active status.
• Receiving Marriott Bonvoy® Points as a Gift or Transfer