Is it permissible for a teacher to keep a gift from a student's guardian, knowing that the student has completed his studies, and is what reaches the teacher in terms of gifts after his repentance considered unlawful?

A gift intended to help a student cheat is forbidden and considered bribery. However, if it is for the sake of fostering good relations, there is no harm in it, especially after the student has completed their studies. There is no objection to a father giving gifts to a teacher, nor to a teacher sending a certificate for a friend's son. The teacher should be advised about the impermissibility of cheating and the importance of refraining from accepting gifts from guardians or students.