Abbas binAbdul-Muttalib said:
“I said: ‘O Messenger of Allah, teach me something that I may ask Allah for.’ He (ﷺ) said: ‘Ask Allah for Al-
Āfiyah.’ Then I remained for a day, then I came and said: ‘O Messenger of Allah, teach me something that I may ask Allah for.’ So he (ﷺ) said to me: “O Abbas, O uncle of the Messenger of Allah, ask Allah for Al-Āfiyah in the world and in the Hereafter.” Reference: Jami` at-Tirmidhi Book 48, Hadith 145
The Prophet Muhammad ﷺ said:
“The one who guides to something good has a reward similar to that one doing it.” [Muslim]
The Prophet ﷺ said:
Convey (knowledge) from me even if it is just one ayah [Bukhari 3461].