Musnad Ahmad 482:108

Hadith of Uqbah ibn Amir al-Juhani (RA) from the Prophet (SAW)

حديث عقبة بن عامر الجهني (1) عن النبي صلى الله عليه وسلم

Hadith 482:108

He said: "There are three whose supplication is answered: the traveler, the parent, and the oppressed."

وقال: " ثلاث مستجاب لهم دعوتهم: المسافر، والوالد، والمظلوم "