Is it permissible for a student of knowledge to go out with the Tabligh group?

Question:
The presenter says: Honorable Shaykh, he asks: Is going out for months, weeks, or days, as the Tabligh group does, a recommended practice (sunnah) or a religious innovation (bid'ah)? And is it permissible to go out with this group if the person is studying Islamic sacred law?

Answer:
This is not permissible. This is a religious innovation (bid'ah). This going out, which is forty days or four days, or forty days or four months, is a religious innovation. And this is a Sufi group; it is established that it is a Sufi group from Deoband. They spread to countries or elsewhere in order to spread Sufism. So it is not permissible for a follower of the Sunnah and a follower of the oneness of Allah (tawhid) to go out with them.
Because if he goes out with them, he assists them in spreading the religious innovation (bid'ah), and people will use him as a proof, saying, "So-and-so went out with them," or "The people went out with them," or "The people of the town went out with them." So one must reject these people; one must reject them and not pay attention to them, so that they return with their religious innovation (bid'ah) to their countries and do not spread it among the people. And a person should not say, "I go out with them in order to teach them." This is a ruse. They do not accept teaching, because they are people of a specific self or a specific methodology. They came to teach you; they did not come to learn from you. They came to teach you their Sufism and their school of thought; they did not come to learn from you. If they wanted to learn, they would sit with the scholars in the mosques and read the books. These are fallacies; it is not permissible to be deceived by them.