Rashi on Exodus 25:37/רש"י על שמות כ״ה:ל״ז

1את נרתיה ITS LAMPS — a kind of small bowls into which the oil and the wicks were put.

2והאיר על עבר פניה AND MAKE THEM GIVE LIGHT OVER AGAINST IT — Make the mouths of those six lamps which are on the top of the branches that come out from its sides so that they are turned towards the middle branch, in order that when you kindle the lamps they shall cast their light over against its (the candlestick’s) front-side, i. e. their light should be directed in the direction of the front of the central branch which forms the candlestick proper.