Brihat Parashara Hora Shastra
यथा राजाज्ञया विप्रा पुत्रामात्यादयो जनाः । समर्था लोककार्येषु तथैवान्येपि कारकाः ॥ ९॥
Importance of Atma Karak. O Brahmin, as the minister cannot go against the king, the other Karakas, viz. Putr Karak, Amatya Karak etc.
english translation
yathA rAjAjJayA viprA putrAmAtyAdayo janAH । samarthA lokakAryeSu tathaivAnyepi kArakAH ॥ 9॥
hk transliteration by Sanscript