Rashi on Genesis 32:27/רש"י על בראשית ל״ב:כ״ז

1כי עלה השחר FOR THE DAY BREAKETH, and I have to sing God’s praise at day (Chullin 91b; Genesis Rabbah 78:1).

2ברכתני [EXCEPT] THOU BLESS ME — admit my right to the blessings which my father gave me and to which Esau lays claim.