RKDh, 1, 2, 26.2 atra sūryapuṭāni prātaḥkālād ārabhya sandhyāparyantaṃ śuṣkamardanena saṃpādanīyāni /

RTar, 3, 37.2 śoṣaṇaṃ sūryatāpe yat tat sūryapuṭamucyate //