זֹ֥את הָֽיְתָה־לִּ֑י כִּ֖י פִקֻּדֶ֣יךָ נָצָֽרְתִּי׃
This I have had, that I have kept Thy precepts.
Rashi on Psalms
This came to me A crown that fits me [was given] to me as a testimony and to my children who are fit to reign, as a reward for my having kept Your precepts. So did the Sages of Israel explain it. I found this: