Reference for Psalms 35:9

וְ֭נַפְשִׁי תָּגִ֣יל בַּיהוָ֑ה תָּ֝שִׂישׂ בִּישׁוּעָתֽוֹ׃

And my soul shall be joyful in the LORD; It shall rejoice in His salvation.

ספר השרשים