Due to misfortune which befell him on the 15th of Tamuz, Yaakov Friedman promised to fast on the 15th of Tamuz in the following year. That year, Mrs. Friedman gave birth to a baby boy. The bris was to occur on the 15th of Tamuz. Since the baby had jaundice and the bris was to be postponed, Yaakov accepted to fast at mincha before the 15th. The next morning, the baby was better and the bris was to take place . What should Yaakov do?
Yaakov was giving his son a bris on one of the 15th of Tamuz. His good friend, Yisrael, was invited to the seudah. Yisrael promised to fast 4 times during Tamuz, and had already accepted his fast during mincha of the 14th of Tamuz. What should Yisrael do?