What is the ruling on stipulating a fast of three days or feeding five indigent persons for one who is unable to memorize the required pages within the specified period in Quran memorization groups?

The obligatory acts in worship are those enjoined by Allah and His Messenger. Neither Allah nor His Messenger has enjoined fasting or charity upon someone who has not memorized their daily portion of the Quran. Your agreement to the teacher's condition is not considered a vow that must be fulfilled, nor does it fall under the necessary conditions in contracts. Jurists hold that if one party to a contract stipulates that the other party must fast or pray, this condition is not binding; in fact, the contract itself becomes void because it is an imposition of something that is not obligatory.