יחזקאל לא:ה פירוש: רש״י

its boughs [Heb. סַרְעַפֹּתָיו,]

its branches [Heb. פֹארֹתָיו.]

because of abundant waters when it sent forth its branches through the abundant waters. When it sent forth its branches, i.e., when it grew its branches, and the expression “sending” applies to them, as “and sent forth branches.”