His excellency, Imaam ‘Abdul-‘Azeez Ibn Baaz (rahimahullaah) was asked about the Jamaa’ah at-Tableegh, so the questioner asked:
Your excellency, we hear about the Jamaa’ah at-Tableegh and that which their da’wah entails. So would you advise me to join this Jamaa’ah (group). I anticipate your guidance and advice, and may Allaah reward you immensely.
So the Imaam responded by saying:
Whoever invites to (the path of) Allaah, then he is a muballigh (one who conveys the message (of Islaam)), (as the hadeeth mentions):
Convey from me, even if it be a (single) Aayah;
However, the Jamaa’ah at-Tableegh (originally) from India have many deviations. They have some aspects of bid’ah and shirk, so it is not permissible to go (out) with them, except for a person who has knowledge and goes (out) with them to disapprove of what they are upon and to teach them (the truth). If, however, he goes (out) to follow and adhere to them, then no.
That is because they have deviations, mistakes and lack of knowledge. However, if there was a Jamaa’ah doing tableegh other than them, from the people of knowledge, then (it is permissible to) go out with them for daw’ah purposes.
If there was a person of knowledge who goes out with them to enlighten and guide them, along with teaching them such that they leave their falsehood and embrace the way of Ahlus-Sunnah wal-Jamaa’ah, (then that is good).
[This was extracted from the tape: ‘fatwaa Samaahatush-Shaykh ‘Abdul ‘Azeez Ibn Baaz concerning the Jamaa’ah at-Tableegh’ which was published in Ta’if about two years before the Shaykh’s death. The tape refutes the cover-up of the Jamaa’ah at-Tableegh and the old statement of the Shaykh which was published before their reality and manhaj was made clear to him.]