A Guarantee He Could Not Give
A woman who had undergone three Caesarean sections was told that her next child would also be born that way. She went to Rav Ben Tzion and told him she would not leave until he guaranteed her a natural birth. He agreed. After she left, his brother asked him how he could promise such a thing.
“I cannot promise anything,” he said, “but what could I do? She would not leave.” The woman had a natural birth. When her husband came to the shul to announce the miracle, Rav Ben Tzion complained that people were making him into an Admor.