"Rebbe was mesaken that everyone has to learn two halachos every day." (Weiser)

"The reason for this is that since the Torah was established to be mesaken the Churban, and the Churban happened as a result of the Jews leaving the Torah, the Geulah will come via the Torah so it is fitting that we make siyumim during the Nine Days." (source)

"The Menahel was mesaken the hours for locking the doors to the buildings.” (Weiser)

“I've been mesaken my watch band temporarily, but I have to get to a jeweler.” (Weiser)