Shiva Purana
ततश्चाङ्गानि विन्यस्य सर्वज्ञानीत्यनुक्रमात्॥ कल्पयेदुपचारांश्च षोडशासनपूर्वकान् ॥ ४० ॥
He shall then perform the Nyāsa of the limbs. The sixteen forms of ancillary services beginning with the offering of the seat shall also be performed.
english translation
tatazcAGgAni vinyasya sarvajJAnItyanukramAt॥ kalpayedupacArAMzca SoDazAsanapUrvakAn ॥ 40 ॥
hk transliteration by Sanscript