(40) باب تَأْخِيرِ قَضَاءِ رَمَضَانَ
Narrated 'Aishah:
If I had some part of the fast of Ramadan to make up, I would not be able to atone for it except in Sha'ban. (ES)
Reference (ES): Sunan Abi Dawud 2399 (ES)
In-book reference (ES): Book 14, Hadith 87 (ES)
English translation (ES): Book 13, Hadith 2393 (ES)