פּירוש אויף תהילים 45:3

You are more handsome than [other] men who engage in the work of transitory life. Why? Because charm is poured into your lips to instruct according to the halachah. הוּצַק means “poured,” as (Exod. 38:27): “to cast (לצקת)”; (Gen. 28:18), “and he poured (ויצק) oil.”

Therefore...blessed you as it is stated (below 29:11): “The Lord shall grant strength to His people.” And what is their reward? “The Lord shall bless His people with peace.”