What is the ruling for an intentionally fasting person who voids their fast by specific actions while remembering their fast?

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If a person fasting an obligatory fast intentionally introduces anything into their stomach from any place, or ejaculates after foreplay, or emits prostatic fluid (madhy), or repeats looking until ejaculation occurs, they must make up the day (Qada') but incur no expiation (Kaffarah). This ruling is based on the requirement to compensate for breaking the obligatory fast intentionally.