99. Where in any case the Supreme Court requires a special case to be stated or restated by, or remits a case to, or orders a stay of execution in a case from, a High Court in a Federated State or requires the aid of the civil or judicial authorities in a Federated States the Supreme Court shall cause letters of request in that behalf to be sent to the Ruler of the State, and the Ruler shall cause such communication to be made to the High Court or to any judicial or civil authority as the circumstances may require.