What is the ruling on visiting people from the Tabligh group?

Question:
A questioner asks, saying: We inform you, Honorable Shaykh, that some brothers visit us and claim to be from the people of Tabligh. They ask us to go visit some of the brothers in Allah, both inside and outside the Kingdom, knowing that we have no knowledge of what we do during these visits. What is your opinion on this?

Answer:
The Tabligh group is a known group, and its origin is from outside the Kingdom, from Pakistan or India. They have no knowledge; they have no knowledge, and they engage in da'wah (calling to Islam) without having knowledge. This is not acceptable. They also do not care about 'aqidah (creed); they do not call to tawhid (the oneness of Allah) and they do not forbid shirk (associating partners with Allah). A da'wah that is not based on tawhid and forbidding shirk is not a correct or beneficial da'wah.
Also, they have systems that Allah has not sent down authority for, such as going out for forty days or four months, or so on. This is an innovated system that Allah has not sent down authority for. So they have transgressions, they have errors, and they have bid'ah (religious innovations). Do not allow them to do so. If you have the power, do not allow them to carry out their work in your country. Warn people against them, do not go out with them, and do not encourage them. We, praise be to Allah, are in the land of tawhid, the land of 'aqidah, the land of da'wah.
We must do what we have of da'wah, tawhid, and spreading knowledge, without allowing these foreigners, or those who follow their methodology, to do this.