Eating suhur with the deliberate purpose of fasting tomorrow normally evidences intention. A distinct formal declaration is unnecessary.
Eating food at night, however, is not automatically an intention to fast. The evidence lies in the person’s actual purpose, not the mere occurrence of a meal.
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Kitab al-Sawm: Categories of Fasting and Rules of Intention
Eating suhur with the deliberate purpose of fasting tomorrow normally evidences intention. A distinct formal declaration is unnecessary.
Eating food at night, however, is not automatically an intention to fast. The evidence lies in the person’s actual purpose, not the mere occurrence of a meal.