Narrated Abu Sa'eed Al-Khudri:
that the Messenger of Allah (ﷺ) said: How can I be comfortable when the one with the horn is holding it in his lips and his forehead is leaning forward, waiting to be given permission to blow? The Muslims said: So what should we say, O Messenger of Allah? He said: Say: 'Allah is sufficient for us and what a good protector He is. We rely upon [our Lord] Allah' - and perhaps Sufyan (one of the narrators) said: upon Allah we rely.