Divrey Hayamim Alef 10:12

Orthodox Jewish Bible

¹² They arose, kol ish chayil, and took the gufat Sha’ul (body of Sha’ul), and the gufot of his banim, and brought them to Yavesh, and buried their atzmot under the elah (oak tree) in Yavesh, and underwent a tzom shivat yamim.