Bhagavatapurana 4.30.40

4.30.40

yan naḥ sutaptaṃ tapa etad īśa nirandhasāṃ kālam adabhram apsu /
sarvaṃ tad etat puruṣasya bhūmno vṛṇīmahe te paritoṣaṇāya //

39. & 40. What we have done by way of properly studying the Vedas, by propitiating the preceptors, Brahmins, elders by constant obedience, by making obeisance to the worthy, wellwishers and brothers and all beings without envy, by performing rijid Tapas, O Lord, without food, under water, for long years,—all this, we pray, may be to the delight of Thee, Perfect Person.