Brihat Parashara Hora Shastra
भावा भद्राश्च केन्द्रारव्याः कोणाख्यौ द्विजसत्तम । एषां संयोगमात्रेण ह्वशुभोऽपि शुभो भवेत् ॥ ३७॥
Kendras and Konas (Putr and Dharm) are auspicious Bhavas, the association with which turns even evil into auspiciousness.
english translation
bhAvA bhadrAzca kendrAravyAH koNAkhyau dvijasattama । eSAM saMyogamAtreNa hvazubho'pi zubho bhavet ॥ 37॥
hk transliteration by Sanscript