MṛgṬīkā zu MṛgT, Vidyāpāda, 1, 2.2, 4.0 tasminn evaikasminn āhitam ekāgrīkṛtaṃ mānasaṃ yais te tathāvidhāḥ santaḥ tepuḥ śivārādhanalakṣaṇaṃ tapaś cakrur ity arthaḥ //