Question: These days common folk trust exorcists and, based on their statements, accuse relatives of doing black magic against them, what about this?
Answer: Accusing a Muslim is Ḥarām and leads to Hell. The statement of an exorcist or a dream or an omen or an Istikhāraĥ are not Shar’ī proof and cannot be used to connect this sin to any Muslim. The Shar’ī proof here means a confession from the culprit that they have done magic themselves or made someone else do it, or if two Muslim men or one Muslim man and two Muslim women testify that they themselves have witnessed him/her doing magic or making someone else do it.
Question: Please tell us the punishment in the afterlife for someone who uses black magic or slanders other people; so that Muslims feel fear and repent.
Answer: Here are two narrations:
1. The following is a warning from the Noblest and Greatest Prophet صَلَّى اللهُ تَعَالٰى عَلَيْهِ وَاٰلِهٖ وَسَلَّم, ‘Whoever tells the fault of a Muslim that he did not have, then Allah عَزَّوَجَلَّ will keep him in the mud, blood and pus of Hell-dwellers until he is relieved of [the harm of] what he said.’ (Sunan Abī Dāwūd, vol. 3, pp. 427, Ḥadīš 3597)
Amīr-ul-Mu`minīn, Maulā-e-Kāināt, ‘Alī-ul-Murtaḍā, the lion of Allah کَـرَّمَ الـلّٰـهُ تَـعَالٰی وَجۡھَـهُ الۡـکَرِیۡم said, ‘Slandering an innocent person is a sin that is heavier than the skies.’
(Nawādir-ul-‘Uṣūl lil-Ḥakīm Tirmiżī, vol. 1, pp. 93)