question #2 Sahih al-Bukhari 3540, Book 61, Hadith 49 : How can the prayers of a righteous person impact one’s health and longevity?

I saw As-Sa’ib bin Yazid when he was ninety-four years old, quite strong and of straight figure. He
said, “I know that I enjoyed my hearing and seeing powers only because of the invocation of Allah’s
Apostle . My aunt took me to him and said, ‘O Allah’s Messenger (ﷺ)! My nephew is sick; will you invoke
Allah for him?’ So he invoked (Allah) for me.”