Sayyiduna Nu'man bin Bashir (may Allah be pleased with him) said that he (peace and blessings be upon him) said: "In everything except iron there is error, and for every error there is compensation."
This hadith revolves around Jabir al-Ju'fi and Qays bin al-Rabi', and neither of them is used as proof.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنايات / 15983