Abu Hurairah narrated that the Prophet (ﷺ) said: "Yawning in prayer (salah) is from the Shaitan, so when one of you yawns then let him suppress (it) as much as possible"
SahihSahihHasan SahihBook 2 · Hadith 222
جامع الترمذي
Abu Hurairah narrated that the Prophet (ﷺ) said: "Yawning in prayer (salah) is from the Shaitan, so when one of you yawns then let him suppress (it) as much as possible"