question #1 Sahih Muslim 956, Book 11, Hadith 93 : What does this narration teach about the Prophet’s concern for individuals who might be overlooked by society?

Lead me to her (or his) grave. They led him to that place and he said prayer over her (or him) and then remarked: Verily, these graves are full of darkness for their dwellers. Verily, the Mighty and Glorious Allah illuminates them for their occupants by reason of my prayer over them.