Lev Tahor is about total control. You can't do anything without permission. And if they ask you to do something, you have to do it. There was one woman who was allergic to sesame seeds, used in tahina. One evening around Sukkot, in fall 2017, in Guatemala, the rabbi wanted to test her faith and told her to eat it. She told him she could die, but after fighting over it, he kept instructing her to eat it anyway.