The action to set aside the land-sale agreement between Anna Guess and strangers to her estate properly belonged in chancery court. See Dent v. Wright, 322 Ark. 256, 909 S.W.2d 302 (1995); Merrell v. Smith, Special Admr., 226 Ark. 1016, 295 S.W.2d 624 (1956); Sykes v. Campbell, 221 Ark. 858, 256 S.W.2d 320 (1953); Petree v. Petree, 211 Ark. 654, 201 S.W.2d 1009 (1947); Beller v. Jones, 22 Ark. 92 (1860); Kelly's Heirs v. McGuire, 15 Ark. 555 (1854). Any attempt to extend probate court jurisdiction without specific authority is void. Carpenter v. Logan, 281 Ark. 184, 662 S.W.2d 808 (1984).