F55The Pillars and Conditions of Fasting
Ruling on Sufficiency of a Single Intention for the Entire Month of Ramadan
Does a single intention suffice for the whole month's fast, or must it be renewed for each day?
Hanafi
A single intention at the start of the month does not suffice for all of it; an intention is required for each day separately.
Reference: Al-Hidāyah — Radd al-Muḥtār — Tabyīn al-Ḥaqāʾiq
Maliki
A single intention at the start of the month suffices for the whole month's fast as long as the sequence is not broken by illness or travel, and renewing it each night is recommended.
Reference: Al-Mudawwanah — Al-Sharḥ al-Kabīr — Mawāhib al-Jalīl
Shāfiʿī
A single intention does not suffice for the whole month; it must be specified for each day on its own.
Reference: Al-Umm — Minhāj al-Ṭālibīn — Al-Majmūʿ
Hanbali
A single intention at the start of Ramadan does not suffice for the whole month's fast; one is required for each day separately.
Reference: Al-Mughnī — Al-Kāfī — Kashshāf al-Qināʿ