Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) performed a prayer in which he made the bowing (ruku') and the prostration (sujud) excellent. Then the narrator mentioned the full hadith.
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17417