Q 4: Does a man have the right to curse people and invoke Satan's curse on them?
Does a man have the right to curse and insult his wife or to invoke (Part No. 26; Page No. 64) curse, anger or shame on her?
This is not permissible with regard to a Muslim, whether they are a relative or not; rather, it is of the major sins, for the Prophet (peace be upon him) said,
Abusing a Muslim is Fusuq (evil doing) and killing him is Kufr (disbelief).
(Agreed upon by Al-Bukhari and Muslim.)
No man accuses another man of sin or Kufr, but it shall rebound on him, if his companion is not like that.
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.