Natyashastra
ततः श्लोकं पठेदेकं गम्भीरस्वरसंयुतम् । देवस्तोत्रं पुरस्कृत्य यस्य पूजा प्रवर्तते ॥ ११३॥
Then he should recite a verse with a deep voice, placing the praise of the gods at the forefront, for whom the worship is being performed.
english translation
tataH zlokaM paThedekaM gambhIrasvarasaMyutam । devastotraM puraskRtya yasya pUjA pravartate ॥ 113॥
hk transliteration by Sanscript