Siman 456

(13.) In the year 5569 during the Three Weeks his daughter Miriam traveled to the Land of Israel — and what happened, happened. And he told of a dream in which someone came and asked him for news — whether he had heard any. He replied: "Michl is traveling to the Land of Israel." The man said: "What kind of news is that — this is already known." And he began to bless his daughter that she should cross safely to the Land of Israel — that she should cross the sea safely and arrive safely in the Land of Israel. And he blessed her with many blessings. And he said that this one who had informed him also hints to this — for Michl is an acronym of [the verse]: "For His angels He will command for you to guard you..."