Language:
كتاب الصوم
30
Fasting
(52)
Chapter: Saum (fasting) in the month of Sha'ban.
(52)
باب صَوْمِ شَعْبَانَ
Sahih al-Bukhari 1970

Narrated `Aisha:

The Prophet (ﷺ) never fasted in any month more than in the month of Sha'ban. He used to say, "Do those deeds which you can do easily, as Allah will not get tired (of giving rewards) till you get bored and tired (of performing religious deeds)." The most beloved prayer to the Prophet (ﷺ) was the one that was done regularly (throughout the life) even if it were little. And whenever the Prophet (ﷺ) offered a prayer he used to offer it regularly .

حَدَّثَنَا مُعَاذُ بْنُ فَضَالَةَ، حَدَّثَنَا هِشَامٌ، عَنْ يَحْيَى، عَنْ أَبِي سَلَمَةَ، أَنَّ عَائِشَةَ ـ رضى الله عنها ـ حَدَّثَتْهُ قَالَتْ، لَمْ يَكُنِ النَّبِيُّ صلى الله عليه وسلم يَصُومُ شَهْرًا أَكْثَرَ مِنْ شَعْبَانَ، فَإِنَّهُ كَانَ يَصُومُ شَعْبَانَ كُلَّهُ، وَكَانَ يَقُولُ ‏ "‏ خُذُوا مِنَ الْعَمَلِ مَا تُطِيقُونَ، فَإِنَّ اللَّهَ لاَ يَمَلُّ حَتَّى تَمَلُّوا، وَأَحَبُّ الصَّلاَةِ إِلَى النَّبِيِّ صلى الله عليه وسلم مَا دُووِمَ عَلَيْهِ، وَإِنْ قَلَّتْ ‏"‏ وَكَانَ إِذَا صَلَّى صَلاَةً دَاوَمَ عَلَيْهَا‏.‏
Reference : Sahih al-Bukhari 1970
In-book reference : Book 30, Hadith 77
USC-MSA web (English) reference : Vol. 3, Book 31, Hadith 191
  (deprecated numbering scheme)