http://revach.net/article.php?id=5019

Section: Parshas HaShavua   Category: Numbers & Letters
Parshas Shmini: Vilna Gaon - Rashi Exemplifies The Emes Of The Torah

"Kol Holeich Al Gachon' We may not eat anything that crawls on its stomach." (Shmini 11:42) Rashi explains the word Gachon meaning stomach with the word Mei'av. Why does Rashi use the word Mei'av which is the term for inside the stomach, rather than Beten which means the belly, which is more correct in this instance?

The Vilna Gaon answers that the stamp of Hashem is Emes. The letters of Emes are Aleph the first letter in the Torah. Men which is a middle letter, and Tuf which is the last. Rashi with his Ruach HaKodesh fashioned his peirush on Torah the same way. The first word in Rashi in Bireishis is Amar which starts with an Aleph. The last word in Rashi in Zos HaBracha is SheShibarta, and its last letter is Tuf. The middle word in the Torah is Gachon. Rashi explains it as Mei'av because Mei'av start with a Mem and his peirush is Emes throughout the Torah!