Shiva Purana
अन्यथा संसरन्त्येते नियमान्न शिवः कथम् ॥ कर्ममायानुबन्धोस्य संसारः कथ्यते बुधैः ॥ ६० ॥
Otherwise how is it that they invariably undergo worldly existence and do not merge into Śiva? Being infested by Karman and Māyā is called worldly existence (saṃsāra) by the learned.
english translation
anyathA saMsarantyete niyamAnna zivaH katham ॥ karmamAyAnubandhosya saMsAraH kathyate budhaiH ॥ 60 ॥
hk transliteration by Sanscript