Rashi on Leviticus 24:6/רש"י על ויקרא כ״ד:ו׳

1שש המערכת SIX ON A ROW — i. e. six cakes shall form one row.

2השלחן הטהר THE PURE TABLE — i. e. the table of pure gold (cf. Rashi on v. 4). Another explanation is that על השלחן הטהר means: immediately upon the טהר of the table (i. e. its top and they must not rest upon something else that is placed on the table-top) — i. e. that the supporting pillars (cf. Rashi on Exodus 25:29) must not raise the bread (i. e. the lowest loaves) above the top of the table (Sifra, Emor, Chapter 18 4; Menachot 97a).