Sayyiduna Jabir (may Allah be pleased with him) narrated that the Messenger of Allah (peace and blessings be upon him) said: "Whoever is following an imam, the recitation of the imam is his recitation."
Jabir al-Ju'fi and Layth bin Abi Sulaym are not used as evidence, and everyone who corroborated them in this is weaker than both of them or than one of them.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2898