Rashi on Genesis 32:4/רש"י על בראשית ל״ב:ד׳

1וישלח יעקב מלאכים AND JACOB SENT MESSENGERS (Heb. מלאכים angels) — actually angels (Genesis Rabbah 75:4).

2ארצה שעיר means TO THE LAND OF SEIR — A word that requires a ל as prefix has a ה placed as a suffix (Yevamot 13b).