Manusmriti
तस्मिन्नण्डे स भगवानुषित्वा परिवत्सरम् । स्वयमेवात्मनो ध्यानात् तदण्डमकरोद् द्विधा ॥ १२ ॥
The divine one resided in that egg during a whole year, then he himself by his thought (alone) divided it into two halves;
english translation
tasminnaNDe sa bhagavAnuSitvA parivatsaram । svayamevAtmano dhyAnAt tadaNDamakarod dvidhA ॥ 12 ॥
hk transliteration by Sanscript