Sunan Abi Dawud 2431
سنن أبي داود#2431SahihNarrated Aisha, Ummul Mu'minin: The month most liked by the Messenger of Allah (ﷺ) for fasting was Sha'ban. He then joined it with Ramadan
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 14:119