Musnad Ahmad 30:933

Abu Kamil narrated to us, Hammad narrated to us, from Khalid al-Hadhdha’, from Shahr ibn Hawshab, from Abu Hurayrah, who said: When the delegation of ‘Abd al-Qays departed, the Messenger of Allah (peace and blessings of Allah be upon him) said: "Every person is the reckoner of his own self. Let every people withdraw to what has appeared to them."