בַּ֭צּוּרוֹת יְאֹרִ֣ים בִּקֵּ֑עַ וְכָל־יְ֝קָ֗ר רָאֲתָ֥ה עֵינֽוֹ׃
אין פֿעלדזן האַקט ער גראָבנס, און אַל דאָס טײַערסטע קוקט אָן זײַן אױג.
Rashi
In the rocks, He split rivers He refers back to the beginning of his topic, that he said that everything has a source. He split the rocks for the source of the rivers, and so, “His eye saw every precious thing,” whence it would emerge for the creatures, [as He did for Israel; He struck a rock and its water flowed.]