What about joining the Muslim Brotherhood or the Tablighi Jamaat?

Question:
Are the Muslim Brotherhood and the Tablighi Jamaat among the people of the Sunnah and the community, and what is the ruling on joining them, following their methodology, and abandoning the methodology of the pious predecessors?

Answer:
The Muslim Brotherhood calls to the Book and the Sunnah, but there is some deficiency in what is mentioned about them in their books; they have some deficiencies that need correction and guidance. The Tablighi Jamaat has sections; the groups of Tabligh have sections. Whoever among them is upon the Sunnah, calling to the Book and the Sunnah with insight and guidance, and has no religious innovations or deviations, is among the people of the Sunnah. And whoever is among the people of innovation is among the people of innovation. One looks into their conditions and statements, for they are many from India, Pakistan, and from within and outside, of various types and sections. Whoever among them is upon the Book and the Sunnah, calling to Allah and to the oneness of Allah, and has no superstitions or religious innovations, there is no harm. And whoever among them has that kind of speech, it is...
And so with the Muslim Brotherhood, one reviews their books. Whatever in them is truth is accepted, and whatever in them is error, it is obligatory to point it out. The one who has it and those around him point out what he sees of error with evidence from the Book and the Sunnah. Yes, they are not infallible. Yes.