صحيح مسلم 1062

Al-Bara' (b. 'Azib), and he was no liar (but a truthful Companion of the Holy Prophet), reported:They used to say prayer behind the Messenger of Allah (ﷺ). I never saw anyone bending his back at the time when he (the Holy Prophet) raised his head, till the Messenger of Allah (ﷺ) placed his forehead on the ground. They then fell in prostration after him

Rapporté par Al-Bara' b. 'Azib, qui était connu pour sa véracité : Ils priaient derrière le Messager d’Allah ﷺ. Je n’ai jamais vu personne s’incliner alors que le Prophète ﷺ avait relevé la tête, jusqu’à ce qu’il pose son front au sol. Ensuite, ils se prosternaient après lui