Matsyapurana 69.18

69.18

aśeṣaduṣṭaśamanam aśeṣasurapūjitam
pavitrāṇāṃ pavitraṃ ca maṅgalānāṃ ca maṅgalam
bhaviṣyaṃ ca bhaviṣyāṇāṃ purāṇānāṃ purātanam //

For the benefit of the pious, unable to suppress their hunger, Lord Vâsudeva, the Jagadguru, the soul of the universe, will explain the rituals relating to this ordinance, which will be the giver of the benefits of all the sacrifices, the destroyer of all sins and calamities, the giver of the highest prosperity, the most ancient of all the forms of ordinances and venerated by the Devas."—17-18.