Original: When Diwan  replied him that Kongunadu is under Hyder Ali, Theerthagiri asked the Diwan to inform Hyder Ali that Kongus know how to rule themselves and they dont need a Mysore King to rule them and asked him to tell Hyder Ali to better look after Mysore.
Simplified: When Diwan informed him that Kongunadu was ruled by Hyder Ali, Theerthagiri asked the Diwan to inform Hyder Ali that Kongus could rule themselves and they did not need a Mysore King.