https://www.btstories.com/bathsheba/

When it was spring, it was time to once again attack the Ammonites. Normally David would go with his men, but he decided to stay home.

After taking a nap one afternoon, he walked along the sundeck that was on the roof of the palace. From there, he saw a beautiful woman taking a bath. He sent for a servant and asked, “Who is that woman?”