Narapatijayacarya 7.7.23

7.7.23

tattatphalaṃ tadā vācyamanyadeśamahīpateḥ ||
nṛpatitrayanāmraiva na vācyaṃ chatrajaṃ phalam ||
bhūpanāmarkṣago rāhuḥ keturvā yadi saṃsthitaḥ ||
chatrabhaṅgo bhavetṛtasya viṣadānena bhūpateḥ ||

one should then pronounce corresponding results for the sovereign of another realm;
the result arising from the royal parasol must not be declared solely from the names of the three kings.
If Rāhu or Ketu is situated in the king's name asterism,
the destruction of the royal parasol of that king will occur through the administration of poison.