I enrolled in a free online course in computer programming, then I learned that it is affiliated with an Israeli center, and that the lecturers are Israelis, so I withdrew from it, knowing that it usually costs a certain amount of money, and now it has become free. What is the ruling on that?

Is someone who curses people considered a disbeliever?

What are the consequences for someone who insults the Divine Essence and then repents?

Regarding the annulment of the marriage contract upon the apostasy of one of the spouses, does the contract become void simply by uttering a word of disbelief, or is one asked about their intention and purpose, and whether this word was uttered intentionally or unintentionally?

What is the concept of piety in general?

Are the letters of the Quran indicative of God's speech, and are they not the essence of the internal speech itself? That is, did God create letters that indicate His eternal speech?

What I know is that provision is written, and there are those who try to cut off my provision in my work, can a person cut off my provision?

A person remembers that they committed an act of disbelief in the past, but they forgot whether they repented from it or not, even though they perform all acts of worship. What should they do?

One of my friends, her husband insults her religion when he gets angry about anything, and he suffers from depression, but he performs ablution and prays and does not neglect his obligatory prayers; even if he disbelieves, he prays and does not remain in disbelief. Does his insulting the religion at that moment absolve her from his responsibility, so she does not remain his wife, or does it not affect her marriage to him?