A group goes out to the desert during vacations and holds lessons, lectures, and night prayers; is there any harm in that?

Question:
May Allah reward you, Honorable Shaykh. A questioner says: There are some righteous people who, when the vacations come in the spring, go out to the desert. They spend their days in preaching and reminding, and they pray the night prayer. They do this with the aim of guiding the young people with them. Is this action among the prohibited things?

Answer:
If they go out for a recreation, not for worship, and they take the opportunity of their gathering to discuss knowledge and the Qur'an, that is good. But if they go out for the sake of worship, considering this going out to be an act of worship, that is a bid'ah (religious innovation). Likewise, if they pray in congregation, praying the night prayer in congregation, and this becomes a regular practice for them, it becomes a bid'ah. However, if they do it occasionally and do not make it a fixed rule, there is no harm. And it is further removed from bid'ah if each one prays alone. Yes.