Should an engagement to a Sufi fiancé who commits bidʻah (innovations in religion) and shirk (polytheism) be annulled, or should one continue to advise him, knowing that he is of good character, loves you very much, and may not accept advice?

Sufism has various types, and Sufi orders differ in their proximity to and distance from the Sunnah, as well as in their objectives. Among them are innovators (Mubtadi'ah), heretics (Zanādiqah), and ascetics (Zuhhād). Innovation (Bid'ah) can be one that leads to disbelief (Mukaffirah), such as seeking help from creation (Istighāthah bil-makhlūq) or believing in knowledge of the unseen, or it can be one that does not lead to disbelief (Ghayr Mukaffirah), such as celebrating the Mawlid (Prophet's birthday). It is forbidden to marry someone who commits an innovation that leads to disbelief, but it is permissible to marry someone who commits an innovation that does not lead to disbelief. However, it is preferable to marry someone who has no innovation at all. The suitor should be advised, and the falsehoods of deviant Sufi thought should be explained to him. If he repents, then the ruling on him is as detailed above. If the marriage does not take place with him, do not grieve, and entrust your affair to Allah.