Musnad Ahmad 526 — Musnad of Uthman ibn Affan

Muslim says that Sayyiduna Uthman (may Allah be pleased with him) freed twenty slaves together in the last days of his life, and he asked for trousers and tied them tightly, although he had never worn them before, neither in the time of ignorance nor in the time of Islam. He said: "Last night I saw the Prophet (peace and blessings be upon him) and the two Shaykhs in a dream. They were saying to me: 'Be patient, tomorrow you will break your fast with us.'" Then he asked for a copy of the Noble Qur'an, opened it, and sat down to read it, and in that state he was martyred while that copy of the Qur'an was in front of him.