Nu'maan bin Bashir Radiyallahu 'Anhu says:
"Are you not in the luxuries of eating and drinking. Whereas I have seen Rasulullah Sallallahu 'Alayhi Wasallam not having ordinary types of dates to full his stomach". (ES)
English reference (ES): Book 25, Hadith 144 (ES)
Arabic reference (ES): Book 26, Hadith 152 (ES)