Leviticus 24:6

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

וְשַׂמְתָּ֥ אוֹתָ֛ם שְׁתַּ֥יִם מַֽעֲרָכ֖וֹת שֵׁ֣שׁ הַֽמַּעֲרָ֑כֶת עַ֛ל הַשֻּׁלְחָ֥ן הַטָּהֹ֖ר לִפְנֵ֥י יְהֹוָֽה׃

And thou shalt set them in two rows, six on a row, upon the pure table before the Lord.