Brihat Parashara Hora Shastra
दैत्यानां बलनाशाय देवानां बलबृद्धये। धर्मसंस्तापनार्थाय ग्रहाज्जाताः शुभाः क्रमात्॥ ४॥
He is Janardan. He assumed the auspicious form of Grahas to destroy the demons (evil forces) and sustain the divine beings.
english translation
daityAnAM balanAzAya devAnAM balabRddhaye। dharmasaMstApanArthAya grahAjjAtAH zubhAH kramAt॥ 4॥
hk transliteration by Sanscript