Bhagavatapurana 10.1.21

10.1.21

giraṃ samādhau gagane samīritāṃ niśamya vedhās tridaśān uvāca ha /
gāṃ pauruṣīṃ me śṛṇutāmarāḥ punar vidhīyatām āśu tathaiva mā ciram //

21. While contemplating the Lord, a voice that spoke in the sky Brahma heard and gladly said to the gods (thus): "O immortals, do you hear (know) from me the words of the Perfect Person and speedily act as directed by Him. Let there be no delay.