Shiva Purana

siva.sh/siva-purana/uma-samhita/25/67

चत्वारः कथिता मासाः षड्दिनानि तथोत्तरे ।। चतुर्विंशप्रवाहेण त्रीन्मासांश्च स जीवति।। ६७ ।।

sanskrit

Four months are said to be six days in the north He lives for three months with twenty-four flows.

english translation

catvAraH kathitA mAsAH SaDdinAni tathottare || caturviMzapravAheNa trInmAsAMzca sa jIvati|| 67 ||

hk transliteration by Sanscript