Sambapurana 10.11

10.11

ityuktā chāyayā saṃjñā jagāma bhavanaṃ pituḥ
pituḥ samīpaṃ gatvā tu vrīḍitā sā tapasvinī

Bhaga like Mitra, and Tvaṣṭṛ with one thousand and one hundred. / During the northward course of the Sun, the rays increase accordingly;