Maysarah bin Habib (may Allah have mercy on him) narrates from Musa bin Talhah (may Allah have mercy on him), who said: I saw Sayyiduna Uthman (may Allah be pleased with him) delivering the sermon standing on the pulpit, and I saw Sayyiduna Mu'awiyah (may Allah be pleased with him) delivering the sermon sitting. He said: "Listen! I am not ignorant of the Sunnah, but I have grown old, my bones have become frail, and your needs have increased. So I wished to fulfil some of your needs while sitting, and then stand and take my share of the Sunnah."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 16787
Ishaq bin Yahya bin Talhah (may Allah have mercy on him) narrates from Musa bin Talhah (may Allah have mercy on him), who said: I went in to Sayyiduna Mu'awiyah bin Abi Sufyan (may Allah be pleased with him). When I left, he called me and said: "Listen, O my nephew! There is a hadith that I heard from the Messenger of Allah (peace and blessings be upon him). I bear witness that I heard the Messenger of Allah (peace and blessings be upon him) say: 'Talhah is among those who have fulfilled their vow.'"
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 16788