After they came down from the high place to the town, Samuel talked with Saul on the roof1 of his house.
References for 1 Samuel 9:25
They rose about daybreak and Samuel called to Saul on the roof, "Get ready, and I will send you on your way." When Saul got ready, he and Samuel went outside together.
As they were going down to the edge of the town, Samuel said to Saul, "Tell the servant to go on ahead of us"--and the servant did so--"but you stay here awhile, so that I may give you a message from God."