Shiva Purana
तपश्चरत्सु पृथिव्यामभवंश्च महीरुहाः ॥ अरक्ष्यमाणायां पृथ्व्यां बभूवाथ प्रजाक्षयः ॥ ३० ॥
While they were performing penance trees grew on the earth. When the Earth stood unprotected there was a great destruction of subjects.
english translation
tapazcaratsu pRthivyAmabhavaMzca mahIruhAH ॥ arakSyamANAyAM pRthvyAM babhUvAtha prajAkSayaH ॥ 30 ॥
hk transliteration by Sanscript