חסידות אויף תהילים 3:8

And on the mountain's peak is a tablet, and on it were written the mannerisms of the page that shields him; from which nations it is. But since the mountain is high, one cannot read the writing. However at the bottom was a tablet; there it was written that whoever has all [his] teeth — he can go up on the mountain. Hashem Yithbarakh provided that there grows such a grass there where one needs to go up on the mountain, that whoever comes there, all his teeth fall out; whether he was going by foot, riding, or driving a carriage by animals, always his teeth would fall out. Lying there were piles white with teeth, like mountains.²"Shinei resha`im shibbarta/You have broken the teeth of the wicked" (Ps. 3:8); Berakhot 54b.