Urwah (may Allah have mercy on him) narrated from Aisha (may Allah be pleased with her) a hadith with the same meaning, which does not differ from it and is even clearer, and said: Abu Bakr (may Allah be pleased with him) stood by the side of the Prophet ﷺ and performed the prayer.
Hadith Referenceمسند الإمام الشافعي / كتاب الصلاة / 315
Hadith Takhrijاخرجہ البخاری، الاذان، باب من قام الی جنب الامام لعلة: 683، ومسلم، الصلاة، باب استخلاف الامام اذا عرض لہ عذر من مرض وسفر وغيرهما .... الخ 418۔