Absalom fled and went to Talmai son of Ammihud, the king of Geshur. But King David mourned many days for his son.
References for 2 Samuel 13:37
After Absalom fled and went to Geshur, he stayed there three years.
And King David longed to go to Absalom, for he was consoled concerning Amnon’s death.
References for 2 Samuel 13:39