Is treating people equally unfairly justice?

Is it permissible to say “So and so is my benefactor (wali ni‘mati)”?

If a person commits a sin for which he deserves to be cursed, can he repent? Is it possible for Allah to forgive him?

Reviling Someone in Secret

Is the saying “If you knew the unseen you would be content with what happened to you” correct?

Comment on the du‘aa’, “I strove hard to conceal my sins, and You strove hard, my Lord, in concealing me”

Ruling of saying the word “wayl” (woe)

The du’aa’ “O Allaah, we do not ask You to overturn the decree but we ask You to help us bear its impact”

Is the supplication, “O Allah, show us a bad day for them” regarded as reviling or inveighing against time?

Can he say “Ana faatir (I am not fasting)” if he is not fasting?