Shiva Purana

siva.sh/siva-purana/rudra-samhita/85/47

प्रथमं फलभोगेन द्वितीयं पर्णभोजनैः।। तपः प्रकुर्वती देवी क्रमान्निन्येऽमिताः समाः ।।४७।।

sanskrit

The first year she spent in taking fruits, the second in taking leaves, in the course of her penance. She spent many years thus.

english translation

prathamaM phalabhogena dvitIyaM parNabhojanaiH|| tapaH prakurvatI devI kramAnninye'mitAH samAH ||47||

hk transliteration by Sanscript