عَنِ السَّائِبِ بْنِ يَزِيدَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ ظَاهَرَ بَيْنَ دِرْعَيْنِ يَوْمَ أُحُدٍ
It is narrated from Sa’ib bin Yazid (may Allah be pleased with him) that on the day of Uhud, the Messenger of Allah (peace and blessings be upon him) wore two coats of mail, one over the other.