Abu Uthman (may Allah have mercy on him) narrates: "In those days of battle in which the Messenger of Allah (peace and blessings be upon him) was fighting, no one remained with the Messenger of Allah (peace and blessings be upon him) except Sayyiduna Talhah and Sayyiduna Sa'd (may Allah be pleased with them both). This is according to the account narrated by the two of them."
Hadith Referenceمسند أبي يعلى الموصلي / مسند طلحة بن عبيد الله / 649
Hadith Takhrij«أخرجه صحيح البخاري برقم: 3517، وأخرجه صحيح مسلم برقم: 2414، مسند ابویعلیٰ ترقیم الاثری: 644»