Tafsiran Daniel 8:16: Rashi

in the midst of the Ulai in the midst of the river.

and he called i.e., the man.

and said to the angel, “You, Gabriel.”

enable this one to understand the vision explain the vision to this one.

this one Heb. לְהַלָּז, an expression of esteem, as he called him חֲמוּדוֹת, one of desirable qualities. Wherever it says הַלָז it refers to a person of form, and from here they learned in the Aggadah: Isaac resembled his father in form and in likeness, for he is called הָאִישּׁ הַלָז in the section commencing, “Now it came to pass when Isaac was old.” (Gen. 39:6): “...and Joseph was fair in form and fair in appearance.” This is the beauty enumerated among the five things that a father merits for his son.