Musnad Ahmad 30:105

'Abd al-Rahman narrated to us, Malik narrated to us, from Khubayb ibn 'Abd al-Rahman, from Hafs ibn 'Asim, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "What is between my house and my pulpit is a garden from the gardens of Paradise, and my pulpit is upon my cistern (Hawd)."