Shiva Purana
तेषां भक्तिमहं दृष्ट्वा सद्यः प्रत्यक्षतामियाम् ॥ ऋषिं छंदश्च कीलं च बीजशक्तिं च दैवतम् ॥ ३५ ॥
I saw their devotion and immediately became aware of this. The sage is the chant and the key is the seed and the power is the deity.
english translation
teSAM bhaktimahaM dRSTvA sadyaH pratyakSatAmiyAm ॥ RSiM chaMdazca kIlaM ca bIjazaktiM ca daivatam ॥ 35 ॥
hk transliteration by Sanscript