حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ، أَنَّهُ سَمِعَ عَائِشَةَ، زَوْجَ النَّبِيِّ صلى الله عليه وسلم تَقُولُ إِنْ كَانَ لَيَكُونُ عَلَىَّ الصِّيَامُ مِنْ رَمَضَانَ فَمَا أَسْتَطِيعُ أَصُومُهُ حَتَّى يَأْتِيَ شَعْبَانُ

Yahya related to me from Malik from Yahya ibn Said from AbuSalama ibn Abd ar-Rahman that he heard A'isha, the wife of theProphet, may Allah bless him and grant him peace, say, "I used to haveto make up days from Ramadan and not be able to do them until Shabancame." Translation Not Available

Book Ref: Muwatta Imam Malik Book 18 Hadith 688
Web Ref:  Muwatta Imam Malik Book 18 Hadith 54