Is it permissible to pray in congregation at home if the mosque is one kilometer away?

Question:
My master. One of the princes invited me to lead the people in prayer in his palace, knowing that we pray in a common hall and the number of worshippers is [number] people, and everyone in the palace prays with me. Is the prayer valid with them or not? Knowing that the mosque is one kilometer away from the palace, is it permissible for me to lead them? And if the prince gives me a sum of money for this, do I take it or not?

Answer:
The prayer is valid. There is no harm in you taking it; the prince is helping you. If the mosque is far from them, then a kilometer is far, not close. But if they went out and prayed in the mosque, that would be better and more excellent for them. However, if they did not go out and prayed in their place in congregation, that is a great good, and praise be to Allah who did not abandon them. But if it is easy for them to go out, that is better and more excellent. For them, with every step, a rank is raised, a sin is erased, and a good deed is recorded. This is a great blessing. The hadith is . But at a kilometer and similar distances, they would not hear the call without loudspeakers, because it is far. As for if it is close to them, where they can hear the call without loudspeakers, they are obligated to go out. It is not permissible for him to pray with them; he is obligated to fulfill the obligatory duties by attending the mosques that are near them. But if the place is far, and the mosques are far from them, like a kilometer or a kilometer and more, there is no harm. The point of the statement is like what the Prophet (peace and blessings be upon him) said: "Whoever hears the call..." The call is heard from far away now with loudspeakers, but if it were without loudspeakers, it would not be heard from a kilometer and similar distances. Yes.