Musnad Abu Ya'la al-Mawsili 62:1

'Abd al-A'la ibn Hammad narrated to us, Fudalah ibn Husayn al-'Attar narrated to us, he said: I heard al-Khattab ibn Sa'id, from Sulayman ibn Muhammad ibn Ibrahim al-Ansari, from 'Abd Allah ibn 'Abd al-Rahman al-Ansari, he said: The Messenger of Allah (may Allah bless him and grant him peace) said: "Those firmly rooted in the mud, the ones that provide food during a time of drought—whoever sells them, then their price is like ashes upon a high peak, upon which a wind blew and cast it away."