Rabbi Bistritzky relates, “At every farbrengen that my son Levi attended until the age of bar mitzvah, the Rebbe would invite him onto the platform. He would gesture to him and then give him some food. Once Levi didn’t go to the farbrengen, and the Rebbe asked, ‘Where’s Levi?’ I replied that he had a high fever, and the Rebbe answered, “In such a situation, he should definitely come to the farbrengen.’”
Translated from the Kfar Chabad Magazine