What is the ruling on participating in da'wah (preaching) camping trips that include overnight stays, provision of food, and religious activities, given that there are those who say it is impermissible because the Salaf did not do it and it falls under the actions of the Khawarij?

Calling people to Allah is one of the best righteous deeds, and its means are not restricted [to specific forms] but rather vary and renew according to time and place. The condition is that the means must not be Islamically forbidden. Therefore, there is no harm in going out for dawah trips, and it is not correct to say that this is an act of the Khawarij, because the Khawarij isolated themselves from people and declared them disbelievers.