Shiva Purana
आलस्यदुरितक्रांत्यै वारं कल्पितवान्प्रभुः । रक्षकस्य तथा विष्णोर्लोकानां हितकाम्यया १५ ।
With a desire to bless the worlds and for their nurture and protection he created the next day dedicated to Viṣṇu, the protector of the worlds.
english translation
AlasyaduritakrAMtyai vAraM kalpitavAnprabhuH । rakSakasya tathA viSNorlokAnAM hitakAmyayA 15 ।
hk transliteration by Sanscript