Zohar, Bereshit 31

1AND GOD SAW THE LIGHT THAT IT WAS GOOD. We have learnt that every dream which contains the term tob (good) presages peace above and below, provided the letters are seen in their proper order…

2, viz. teth, representing the ninth grade (from the end, i.e. Wisdom) vau, the heavens, and beth, the two worlds.

3These three letters were afterwards combined to signify “the Righteous one (Zaddik) of the world”, as it is written, “Say of the righteous one that he is good”, because the supernal radiance is contained therein.