Gemara:

Shabbat 

Halacha:

Chanukah 

Machshava:

Chanukah 

References: Shabbat: 21B  

Description

In every other mitzva, there is ONE way to do it, with some being more stringent and some lenient. Why on Chanukah, initially from the time of the Talmud, there were THREE ways to light the Menorah: either 1 candle, 1 for each member of the household or adding 1 each night?