Matsyapurana 161.18

161.18

tato devāśca nāgāśca gandharvā ṛṣibhiḥ saha
varapradānaṃ śrutvaiva pitāmahamupasthitāḥ //

Then the Devas, the serpents, the Gandharvas, and the Ṛiṣis, etc., hearing the nature of the boons conferred on the demon by Brahmâ went to Him and said "O Brâhmana! By virtue of Your boons, the demon will kill us all, so You should devise some means of his destruction. Bhagavâna! You are the prime cause of all, You are Supreme, You are the Creator of the Devas and the Pitṛis. The Kavyas and Ravyas, offerings to the Devas and the Pitṛis, are ordained by You. You are the unmanifested Prakṛiti. You are wise and you are self-born."—18-20