Is it permissible to go out with the Tabligh group? And does one sin if he does not pray the witr?

The questioner : Shaykh, I mentioned regarding Tabligh. Well, if it is ... is it permissible for us to advise the young beginners not to go out with them? Because the Tabligh group has taken this matter up, and they say, "You sit for years and years, and people are dying in disbelief in ... and millions of people enter Islam, and how many have repented, and how many drunkards, intoxicated with khamr, have embraced Islam and been guided through their hands." They defend themselves in this way, and the emotional person is moved and goes with them to the method they speak of. So, is it permissible for us to advise the young beginners not to go out, or not? Because they oppose this matter?

The Shaykh : Shaykh, if going out is prescribed, we advise them to go out. If it is not prescribed, we advise them not to go out. The scholarly research is concluded: if going out is prescribed, we advise the youth to go out. If it is not prescribed—as we believe—then we advise them not to go out, but to sit in the mosques, read the Qur'an, and study knowledge.

The questioner : If one leaves the witr intentionally or out of laziness, is he sinful?

The Shaykh : He is not sinful, because the witr is a recommended practice.