Sisera, the Assyrian general who fought the Jews, was killed by Yael as he fled the battlefield. The midrash tells us that Sisera’s wicked mother cried one hundred and one tears when she heard the news of her son’s death. We sound one hundred shofar blasts to counteract these tears which she shed in anger and pain at her son’s defeat at the hand of the Jews. The one tear that cannot be erased is the tear shed out of pure love of a mother for her son.
According to the Sephardic tradition, 101 blasts are sounded. This is one more than the numerical value of the letters "samech" and "mem," which spell the name of the most harmful angel. Adding one gives us the numerical equivalent of "Michael," the name of the most "righteous" angel.
The Yemenite tradition is to sound only 41 blasts.
