some people refer to him as “the heilege rebbe reb meilich”. Chassidim often light candles for yurtzeits of rebbes, as a way to remember them, and to bring a little light in to teh world, as a memory of the “light” we lost when they were niftar. don’t know if they do it on 7 adar (moshe rabeinu’s yurtzeit). (they do keep a candle lit for a whole year after a parent is niftar.)
