Phaladeepika
तत्तद्भावात्कारकादेवमूह्यं तत्तन्मातृभ्रातृपित्रात्मजाद्यम् । तस्मिन् भावे कारके भावनाथे वीर्योपेते तस्य भावस्य सौखम् ॥ २५॥
All details about the mother, brother, father, son, etc,, of a Bhava should thus be divined by a reference to the particular Bhava and its Karaka When any Bhava, its lord and its Karaka are all strong, one ought to predict good effects ( happiness) for that Bhava.
english translation
tattadbhAvAtkArakAdevamUhyaM tattanmAtRbhrAtRpitrAtmajAdyam । tasmin bhAve kArake bhAvanAthe vIryopete tasya bhAvasya saukham ॥ 25॥
hk transliteration by Sanscript