תּלמוד אויף משלי 10:25

And the sages say, It stands upon twelve pillars, as it is said, (Deuteronomy 32:8) "He set the bounds of the nations according to the number of the children of Israel." And some say, Seven pillars, as it is said, (Proverbs 9:1) "She has hewn out her seven pillars." R. Elazar ben Shamua says, Upon one pillar, and its name is "The Righteous", as it is said, (Proverbs 10:25) "And the righteous is the foundation of the world."