af·fi·da·vit 
/ˌæfəˈdeɪvət/ noun
plural af·fi·da·vits /ˌæfəˈdeɪvət/ noun [count] law : a written report which is signed by a person who promises that the information is true
▪ We have a signed affidavit stating that the two men were seen entering the building.
▪ We have a signed affidavit stating that the two men were seen entering the building.
