Anas ibn Malik reported: The Messenger of Allah, peace and blessings be upon him, said, “There are three supplications that are never rejected: the supplication of a parent, the supplication of a fasting person, and the supplication of a traveler.”
Source: Sunan Al-Kubra Al-Bayhaqi 5900
Grade: Sahih (authentic) according to As-Suyuti
عَنْ أَنَسِ بْنِ مَالِكٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ثَلاثُ دَعَوَاتٍ لا تُرَدُّ دَعْوَةُ الْوَالِدِ وَدَعْوَةُ الصَّائِمِ وَدَعْوَةُ الْمُسَافِرِ
5900 السنن الكبرى للبيهقي
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