Advice for scholarship students in seeking and spreading knowledge

Question:
This is also a question from scholarship students. They say: We come and study the creed of the people of the Sunnah and the community at this university, but some of us may not benefit from what is presented to us through the courses and curricula, then return to their countries without benefiting from it, and may call people to matters that contradict what they learned. What is your advice to him and those like him?

Answer:
Our advice to him and those like him is to fear Allah the Exalted, and to act upon what Allah has taught them of the true religion and beneficial knowledge. They should thank Allah for it, for it is a blessing from Allah upon them. So they must engage in seeking knowledge with desire and the intention of reward. They should also convey what they have carried of this knowledge to those who need it. The believers would not all go out [to seek knowledge], meaning they would not all come to learn. Rather, a group from each faction should go out to gain deep understanding of the religion and to warn their people when they return to them. To gain deep understanding of the religion first, and to warn their people when they return to them.
They should warn them with wisdom and good exhortation, and argue in the best manner. They should not confront them with violence and harshness, saying, "You are disbelievers, you are misguided, you are such and such." No, they should say, "This is the truth, this is the path of truth, and this is the straight path. You must adhere to it and abandon what contradicts it." Yes.