How can a person know who has envied him, and how should the one who has been envied be treated?. Jinn, witchcraft,evil eye -,

Is it possible for a personwho has been affected by envy (hasad) to
knowwhether the envy came from himself or from another person? What is
the remedy in either case?.
Praise be to Allaah.
Firstly:
If a person looks at something he has with admiration and he does not
pray for barakah (blessing) for it, by saying "Baarik Allaahu fihi
(may Allaah bless it)"and the like, and this thing is then affected in
some way, then it is possible to know that hehas inflicted hasad on
himself.
It is not possible to knowthat a specific person is the one who has
envied you, except in circumstances such as those described above,
such as if a person enters your shop and starts to admire it but does
not pray for it to beblessed, then things in the shop get broken or
damaged.
This applies in cases where the effect is seen straightaway. But if a
long time passes before something happens, then we cannot be certain
that a specific person has envied him.
There are means that some people use to find out who has put the evil
eye on something or someone, but these are not prescribed or approved
of in sharee'ah, rather they are devilish means, such as imagining
(the personwho caused it) during recitation of Qur'aan as a remedy, or
seeking thehelp of the jinn and devils (shayaateen) to find out such
things.
The scholars of the Standing Committee said:
With regard to imagining (the person who caused it) during recitation
of Qur'aan as a remedy, this is a devilish procedure which is not
permitted, because it is seeking the help of the devils (shayaateen),
who appear to the sick person in the form of the one who afflicted
him. This is something that is haraam, because it involves seeking the
help of the devils, and because it stirs up enmity between the people,
and spreads fearand mistrust among people, so it comes under the verse
in whichAllaah says (interpretation of the meaning):
"And verily, there were men among mankind who took shelter with the
males among the jinn, but they (jinn) increased them (mankind) in sin
and transgression"
[al-Jinn 72:6]
They said: It is not permissible to seek the help of the jinn in order
to find out what has been done and how it should be treated, because
seeking the help of the jinn is shirk. Allaah says (interpretation of
the meaning):
"And verily, there were men among mankind who took shelter with the
males among the jinn, but they (jinn) increased them (mankind) in sin
and transgression"
[al-Jinn 72:6]
And He says (interpretation of the meaning):
"And on the Day when He will gather them (all) together (and say): 'O
you assembly of jinn! Many did you mislead of men,' and their Awliyaa'
(friends and helpers) amongst men will say: 'Our Lord! We benefited
one from the other, but now we have reached our appointed term which
You did appoint for us.' He will say: 'The Fire be your dwelling
place, you will dwell therein forever, except as Allaah may will.
Certainly your Lord is All-Wise, All-Knowing'"
[al-An'aam 6:128]
What is meant by benefiting from one another is that the humans
venerated the jinn and humbled themselves to them and sought their
help, so the jinn served them and didwhat they wanted, and brought
them what theyasked for – including telling them the nature and causes
of sickness, things which the jinn can see but humans cannot. But they
may tellthem lies because they cannot be trusted and it is not
permissible to believe them.
Majallat al-Da'wah, no. 1682.
Secondly:
With regard to treating one who has been affected by envy, there are
two ways of doing this:
If the person who envied him is known, he may be asked to do ghusl and
the water used should then be poured on the "victim". If he is not
known then the remedy is by means of ruqyah and the dhikrsprescribed
in sharee'ah.