I have heard of a custom in Chabad to light yahrzeit and yizkor candles for the rebbeim. But I literally don't know anything about it except that some in Chabad do it. Can anyone tell me:
- How common is this practice inside/outside Chabad?
- Who inside/outside Chabad practices it?
- How do they practice it? Are additional yizkor candles lit beyond that/those for loved ones? Are yahrzeit candles lit for all 7 (9?) rebbeim of Chabad?
- Generally, how common is the practice of lighting yahrzeit/yizkor candles for non-family, i.e. tzaddikim?