While in trance, Lord Brahmā heard the words of Lord Viṣṇu vibrating in the sky. Thus he told the demigods: O demigods, hear from me the order of Kṣīrodakaśāyī Viṣṇu, the Supreme Person, and execute it attentively without delay.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
गिरं समाधौ गगने समीरितां निशम्य वेधास्त्रिदशानुवाच ह । गां पौरुषीं मे शृणुतामराः पुन- र्विधीयतामाशु तथैव मा चिरम्
giraṃ samādhau gagane samīritāṃ niśamya vedhāstridaśānuvāca ha | gāṃ pauruṣīṃ me śṛṇutāmarāḥ puna- rvidhīyatāmāśu tathaiva mā ciram
SB 10.1.21