From Sahih Muslim (Hadith 406):
Jabir b. 'Abdullah al-Ansari who was one of the Companions of the Messenger of Allah (ﷺ) reportedThe Messenger of Allah (ﷺ) told about the intermission of revelation and narrated While I was walking I heard a voice from the sky, and raising my head I saw the angel who had come to me in Hira', sitting on a Throne between heaven and earth I was terror-stricken on that account and came back (to my family) and said:Wrap me up, wrap me up! So they wrapped me up, and the Blessed and Most Exalted Allah sent down:" You who are shrouded, arise and deliver warning, your Lord magnify, your clothes cleanse, and defilement shun," and" defilement" means idols; and then the revelation was followed continuously
Reference: Muslim 406