The Messenger of Allah ﷺ said, "There are three supplications that are answered without doubt: the supplication of the wronged, the supplication of the parent, and the supplication of the traveler."
حدثنا وكيع قال حدثنا هشام الدستوائي عن يحيى بن أبي كثير عن أبي جعفر
قال رسول الله ﷺ ثلاث دعوات مستجابات لا شك فيهن دعوة المظلوم ودعوة الوالد ودعوة المسافر
Its isnad is hasan. Abu Jafar is the Ansari, the Madinan muezzin, and his name, according to the most correct view, is Muhammad bin Ali bin Husayn. The hadith has already appeared at 8564, and it was narrated by Bukhari in Adab al-Mufrad 32, Abu Dawud 1536, Tirmidhi 1905, Ibn Majah 3862, and Ibn Abu Shayba 1/429.