Yahya related to me from Malik from Ibr Shihab that Abdullah ibnAbbas and Abu Hurayra differed about making up days missed in Ramadan.One of them said that they were done separately and the other saidthat they were done consecutively. He did not know which one of themit was who said that they were done separately.
USC-MSA web (English) reference: Book 18, Hadith 46
Arabic reference: Book 18, Hadith 679