The Chishti tariqah is one of the deviant Sufi tariqahs

In the answer to question no.
143615 we give some brief information about
Moinuddin Chishti and his beliefs; he is a Sufi man, the founder of one of
the innovating Sufi tariqahs. 

It is well known that the Sufis
exaggerate about their shaykhs and make up lies and fabricated stories to
promote and spread that exaggeration. Miracles (mu‘jizaat) can only happen
to the Prophets and Messengers of Allah; as for karaamaat (miracles or
extraordinary events), they may happen to the close friends of Allah (awliya’)
who adhere to the straight path and are pious, not to those who deviate or
change the religion. 

Please see the answer to question no.
124383 to learn about the difference between a
mu‘jizah and a karaamah. 

The extraordinary events that happen at
the hands of the extreme Sufis who have deviated from the path of the Sunnah
are akin to what happens at the hands of tricksters, charlatans and
magicians; it is the handiwork of the Shaytaan aimed at misguiding people,
so we should not be deceived by it. 

Ibn Katheer (may Allah have mercy on
him) said in his biography of Shaykh Yoosuf al-Iqmeeni: 

He used to wear a long garment that
dragged on the ground, and he used to urinate in his garment, and leave his
head uncovered, but they claimed that he often performed miracles and spoke
of the unseen, and many of the common folk and others believed that he was
righteous and was a wali (“saint”). That is because they know nothing about
the conditions of being a wali (close friend of Allah) or of righteousness,
and they do not know that speaking of the unseen could come from one who is
righteous or one who is an evildoer, or from one who is a believer or one
who is a disbeliever, such as monks and others, and such as the Dajjaal, Ibn
Sayyaad and others. So it is essential to test the one who performed the
miracle against the Qur’an and Sunnah. If a person’s conduct is in
accordance with the Book of Allah and the Sunnah of His Messenger, then he
is a righteous man, whether he performs miracles or not; if it is not in
accordance with them, then he is not a righteous man, whether he performs
miracles or not. 

Ash-Shaafa‘i said: If you see a man
walking on the water or flying through the air, do not be deceived by him
before checking his case against the Qur’an and Sunnah.

End quote from al-Bidaayah
wa’n-Nihaayah (13/251). 

One of the falsehoods fabricated by the
extremists is the claim that this Moinuddin went to Madinah, and went to the
grave of the Prophet (blessings and peace of Allah be upon him) and spoke
with him. This is impossible, because the Prophet (blessings and peace of
Allah be upon him) died and his worldly life came to an end. So whoever
claims that he saw the Prophet (blessings and peace of Allah be upon him) or
spoke to him after his death is lying. 

Shaykh Ibn Baaz (may Allah have mercy
on him) was asked: 

What is the correct view concerning
that which is narrated from one of the well-known Sufi imams, that he
visited the mosque of the Prophet (blessings and peace of Allah be upon him)
in Madinah, and offered supplication at the grave, and the Messenger
(blessings and peace of Allah be upon him) stretched out his noble hand to
him, and he kissed it, and this is widely known and believed among the
followers of his tariqah? 

He replied: 

This is something false and it has no
sound basis, because the Prophet (blessings and peace of Allah be upon him)
died, as Allah decreed for him, and as He, may He be glorified, said
(interpretation of the meaning): “Verily, you (O Muhammad) will die, and
verily, they (too) will die” [az-Zumar 39:30]. And the Prophet
(blessings and peace of Allah be upon him) said in the saheeh hadeeth:
“Verily Allah has angels who travel about in the earth and convey to me the
salaams of my ummah.” And he said: “The best of your days is Friday, so send
a great deal of blessings upon me on that day, for your prayers for blessing
will be shown to me.” They said: O Messenger of Allah, how will they be
shown to you when you have turned to dust? He said: “Verily Allah has
forbidden the earth to consume the bodies of the Prophets.” And there are
many similar hadeeths, but he did not say in any of them that he would shake
hands with anybody. This indicates that this story is false. Even if we were
to assume that it is true, that may be interpreted as meaning that a devil
shook hands with him in order to confuse him and lead him astray. So what is
required of all Muslims is to fear Allah and to adhere to teachings of Islam
as indicated by His holy Book and the Sunnah of His trustworthy Messenger,
and to avoid anything that goes against that.

End quote from Majmoo‘ Fataawa Ibn
Baaz (9/310-311). 

What must be done is to forbid people
to go to graves and ask of their occupants instead of Allah, whether they
were righteous or otherwise, because asking of the occupants of graves
instead of Allah is a type of major shirk that puts one beyond the pale of
Islam. There is no need for anyone to prove that the occupant of the grave
was anything other than righteous in order to tell the people not to worship
him or turn to him. 

Please see the answers to questions no.
6744, 112867 and
153666. 

Please see the answer to question no.
20375 for information on the truth about Sufi
tariqahs and the ruling on joining them. 

And Allah knows best.