Sunan At-Tirmidhi

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