Shiva Purana

siva.sh/siva-purana/rudra-samhita/11/33

अथ वाऽष्टदलं कृत्वा पूजाद्रव्यं समीपतः ।। उपविश्य ततस्तत्र उपवेश्य शिवम् प्रभुम् ।।३३।।

sanskrit

Then, after preparing the offering with an eight-fold arrangement, one should sit near the offering place and place the materials for worship. After this, one should sit in a comfortable position and worship Lord Shiva.

english translation

atha vA'STadalaM kRtvA pUjAdravyaM samIpataH || upavizya tatastatra upavezya zivam prabhum ||33||

hk transliteration by Sanscript