Shiva Purana
हरिश्च तत्सत्यमितीव चिंतयंश्चकार तस्मै विधये नमः स्वयम् । षोडशैरुपचारैश्च पूजयामास तं विधिम् २८ ।
Hari, taking it to be true, made obeisance to Brahmā. He worshipped Brahmā with all the sixteen means of service and homage.
english translation
harizca tatsatyamitIva ciMtayaMzcakAra tasmai vidhaye namaH svayam । SoDazairupacAraizca pUjayAmAsa taM vidhim 28 ।
hk transliteration by Sanscript