It was narrated that Abu Salamah said:“I heard ‘Aishah say: ‘I used to owe fasts from the month of Ramadan, and I would not make them up for until Sha’ban came.’”
Hadith No. 1669
Sunan Ibn Majah
Gradings:
Al-Albani:
Sahih
Muhammad Fouad Abd al-Baqi:
Sahih
Shuaib Al Arnaut:
Hasan Sahih
Zubair Ali Zai:
Sahih - Bukhari And Muslim