Musannaf Ibn Abi Shaybah 39397 — Reports on the letters of the Prophet

It is narrated from Muhammad bin Ja'far bin al-Zubayr that the Messenger of Allah (peace and blessings be upon him) sent Sayyiduna Abdullah bin Unays (may Allah be pleased with him) to Khalid bin Sufyan. The narrator said: When I came near him, and that was at the time of Asr, I feared that some engagement or undertaking would occur before I reached him, so I prayed while walking.