This hadith has been transmitted on the authority of Sufyan and the words are:
" We could not afford to eat to the fill even dates and water." (RU)
Reference (RU): Sahih Muslim 2975 c (RU)
In-book reference (RU): Book 55, Hadith 40 (RU)
USC-MSA web (English) reference(deprecated numbering scheme): Book 42, Hadith 7096 (RU)