Phaladeepika
भूपः स्युर्नृपवंशजास्तु यदि दुर्योगे न जातास्तथा ह्यन्तार्धिर्नहि चेत्कराद्दिनकराज्जानाः स्फुरन्त्येव ते । त्र्याद्यैः केन्द्रगतैः स्वभोच्चसहितैर्भूपोद्भवाः पार्थिवाः मर्त्यस्त्वन्यकुलोद्भवाः क्षितिपतेस्तुल्याः कदाचिन्नृपाः ॥ २॥
Persons born in a royal family will become Kings if, at the time of birth, they are not born under any Duryoga or if the planets be not eclipsed by the Sun's rays. Three or more planets in Kendra positions at birth identical with their own or exaltation signs will make Kings of the persons born of royal families. Others under the above Yogas will only become their equals or sometimes Kings.
english translation
bhUpaH syurnRpavaMzajAstu yadi duryoge na jAtAstathA hyantArdhirnahi cetkarAddinakarAjjAnAH sphurantyeva te । tryAdyaiH kendragataiH svabhoccasahitairbhUpodbhavAH pArthivAH martyastvanyakulodbhavAH kSitipatestulyAH kadAcinnRpAH ॥ 2॥
hk transliteration by Sanscript