“The yeshiva's policy of locking the dorm at all times was chal on each bochur, who then had to carry a key.” (Weiser)

“The chiyuv to learn is chal on you as soon as seder starts.” (Weiser)

“The issur melocha on Shabbos is chal from shkiya.” (Weiser)

"Any properly done geirus on an adult is chal as long as someone believes the Torah is true." (source)

"He is one of the most chal guys in the yeshiva."