Ramaḍān and Fasting
Acts of Worship Associated with the Month of Shaʿbān
Shaykh Muhammad Aman al-Jami explains that fasting Shaʿbān in full or mostly is a confirmed Sunnah. However, the practice of fasting only the middle day and worshipping that night is an innovation and not permitted. The Prophet ﷺ did not prescribe it.