ציטירנדיקער פּירוש אויף שמואל א 17:34

"And fall" can indicate many - as in "Let, then, Bezalel and Oholiab" [Exodus 36:1]; "even if the sign or portent comes true" [Deuteronomy 13:3]; "and if a lion or bear came" [I Samuel 17:34].

The meaning of et is like the thing itself, yet indicating a direct object, like et hashamayim, and sometimes it is omitted, as in “since G-d created man” [with the direct object indicator missing] – Deuteronomy 4:32. And at times it’s [even] found with the subject, as in “the lion came and et the bear” – Samuel I 17:34, but there are few of these. It can [also] be in place of “with” and in place of ‘from”.

מטרף בני עלית, “you my son, removed yourself from the prey.” The reason the simile of טרף, prey, is used by Yaakov, is that it is appropriate for someone described as אריה, lion. You got up and removed yourself from treating Joseph as “prey.” The word טרף here is to be understood as a transitive verb. Some commentators understand the word as an intransitive verb, so that the words מטרף בני עלית would be an allusion to David (re-incarnate of Yehudah) standing by the lion that had become his prey. He had succeeded in killing a lion and a bear, which gave him the courage to engage in battle against Goliath. (compare Samuel I 17,34) David’s victory over Goliath was the foundation of his subsequent greatness.