Rashi on Leviticus 19:34/רש"י על ויקרא י״ט:ל״ד

1כי גרים הייתם FOR YE WERE STRANGERS [IN THE LAND OF EGYPT] — "Do not reproach thy fellow-man for a fault which is also thine” (cf. Rashi on Exodus 22:20).

2אני ה' אלהיכם I AM THE LORD YOUR GOD — Thy God and his God am I! (אלהיכם “your” God — the God of both of you).