Mamash

"And Yaakov sent angels ahead of him to Eisav" [Vayishlach 32:4]

Rashi comments: "And Yaakov sent angels -  literally [mamash] angels".

R'Meir of Premishlan explained Rashi's words with the Mishnah in Pirkei Avos [4:13] : "He who fulfills one mitzvah gains one advocate for himself". When an individual performs a mitzvah, he creates an angel that speaks favorably on his behalf in Heaven.

The verse tells us that Yaakov sent angels as messengers to Eisav. Which angels did Yaakov send? Those angels that had been created through the mitzvos that he had performed.

This is what Rashi is alluding to when he says: "mamash angels".  For "mamash" is the acronym of the words "malachim me'mitzvos sheásah" ["angels from the mitzvos he performed"].