Shiva Purana
तदधिष्ठाय हरिणा सृष्टिकामनया ततः ॥ बहुकालं तपस्तप्तं तद्ध्यानमवलंब्य च॥ ११॥
Occupying it with a desire for creation and meditating, Visṇu performed penance for a long time.
english translation
tadadhiSThAya hariNA sRSTikAmanayA tataH ॥ bahukAlaM tapastaptaM taddhyAnamavalaMbya ca॥ 11॥
hk transliteration by Sanscript