Shiva Purana

siva.sh/siva-purana/kotirudra-samhita/29/44

यदि पूजा न जाता चेन्न भुनक्ति तदा तु सः ।। अतस्तत्रापि वैश्योऽसौ चकार शिवपूजनम् ।। ४४ ।।

sanskrit

If on any day he could not worship Śiva he did not take his food. The Vaiśya performed the worship of Śiva there in the prison also.

english translation

yadi pUjA na jAtA cenna bhunakti tadA tu saH || atastatrApi vaizyo'sau cakAra zivapUjanam || 44 ||

hk transliteration by Sanscript