what is wrong with this in of itself (given situation of sunnis - see below)? If a Shaykh does not compromise on sunni aqayid, then what is the issue?
the point is that devbandis use this association to claim that they are approved by and are admired by, say, shaykh fulan. and then throw the conclusion: therefore, there is nothing wrong with our ulama or our books. so you will be handed taqwiyatul iman - which according to gangohi is faith personified: (ayn iman) and the rest of the books.
if a shaykh KNOWS of all this and disapproves, he has no business going to their masjid - particularly in a free country, where you don't have to fear reprisals. the scholar should not only abstain but make it known that he is against them and their deviant beliefs.
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sub'HanAllah, if a time-traveller from the 18th century arrived in our age, he may be surprised at how we explain the obvious.
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how can sunni Shaykhs reach out to the masses that attend deobandi / wahaabi masaajid?
if the shaykh refutes their beliefs and places emphasis on sunni-wahabi differences in THAT gathering, he is certainly allowed to go. but the question is, will they allow him to say things against their school of thought? or will the shaykh have the courage to slap them in their own dens?
if he does not, and i could wager that they will not say anything that will ruffle feathers, the message that is sent to the following people:
i.e. the common folk that simply go to pray, attend jumuah, attend a few talks here and there, etc.?
the message that these people receive is that there is nothing wrong with this (wahabi-devbandi) masjid and these groups and their scholars. else, why would this 'sunni' shaykh come here and be friendly, cozy (probably even praise their maulvis)? if you tell them to keep away from wahabis, they will tell you: 'your mawlana/shaykh/pir doesn't think so. who are you to criticise them?'
yes, but if any scholar has the courage to go their event and publicly criticise their beliefs, ideas, deviance, their deplorable lack of respect concerning the Messenger of Allah sallAllahu alayhi wa sallam etc., (read that burnable book
tafwiyat al-iman if you don't believe me), then such a scholar is indeed doing good service to sunnis.
sunni Shaykhs will be able to get their message out to a population they normally don't have access to
an adage in urdu: "the elephant has a set of teeth to chew and another (tusks) to show."
if this be the ostentatious reason for 'sunni' shaykhs to attend devbandi/wahabi gatherings, will they have the courage to give that message? or will this be used just as a justification for attendance, and then numerous excuses will be offered for not "getting the message across"?
for example, 'the topic of the talk was something else' 'we were only talking of the excellence of the Messenger sallAllahu alayhi wa sallam' etc. all you need is a license to attend, excuses will come down in torrents.
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Allah ta'ala knows best.