Musar su Salmi 81:5

Our sages have stated this best when interpreting Psalms 81,5: כי חק לישראל הוא, "it is a statute as far as Israel is concerned," but משפט לאלוקי יעקב, "it certainly makes sense to the G–d of Jacob." The word "'לאלוקי," in that verse is an allusion to Moses, whom we know as the איש האלוקים. The word "יעקב," in the same verse is an allusion to Rabbi Akiva who represents the best in Jacob.