Qays bin Abi Hazim narrates: I saw Sayyiduna Khalid bin al-Walid (may Allah be pleased with him) leading the people in prayer in the army, wearing a single garment.
Abu Ya'la and al-Tabarani in al-Mu'jam al-Kabir recorded it, and its chain is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصلاة / 2225