Be mindful and respectful when visiting places where people have suffered great losses or injustices; strive to do good deeds; remember Allah's power; enter in a state of sorrow if you must visit such places.

The Prophet Muhammad ﷺ was passing by Masjid al-Hijr when he gave a warning against entering the dwellings of those who were unjust to themselves. He advised that if one does enter, they should do so in a state of sorrow and grief, lest they suffer from the same calamity as those people did. This hadith teaches us that we should be mindful and respectful when visiting places where people have suffered great losses or injustices. We should also remember that Allah is All-Knowing and All-Aware, and He will not let any injustice go unpunished. We must always strive to do good deeds so that we can avoid such calamities ourselves.