Vishnupurana 2.11.3

2.11.3

yakṣāṇāṃ ca rathe bhānor viṣṇuśaktidhṛtātmanām
kiṃ tvādityasya yat karma tan nātroktaṃ tvayā mune //

MAITREYA.--You have related to me, holy preceptor, the seven classes of beings who are ever present in the solar orb, and are the causes of heat and cold: you have also described to me their individual functions, sustained by the energy of Vishńu: but you have not told me the duty of the sun himself; for if, as you say, the seven beings in his sphere are the causes of heat, cold, and rain, how can it be also true, as you have before mentioned, that rain proceeds from the sun? or how can it be asserted that the sun rises, reaches the meridian, or sets, if these situations be the act of the collective seven.