The Prophet (ﷺ) said: Three supplications are answered, there being no doubt about them; that of a father, that of a traveller and that of one who has been wronged.
Sunan Abi Dawud Book 8, Hadith 121
← Previous Hadith The Prophet (ﷺ) said: The supplication which gets the quickest answer is that made by one distant Muslim for another.

Sunan Abi Dawud Book 8, Hadith 120 Next Hadith → When the Prophet (ﷺ) feared a (group of) people, he would say: "O Allah, we make Thee our shield against them, and take refuge in Thee from their evils."

Sunan Abi Dawud Book 8, Hadith 122