ON THE SUBJECT OF 172 THE SUPPLICATION OF A TRAVELER; THREE PRAYERS THAT ARE ALWAYS ACCEPTED H 993 "Three kinds of prayer are assured of acceptance without a doubt: the prayer of the oppressed; the prayer of the traveler, and the prayer of a father for his son." R 993 Abu Daud and Tirmidhi with a chain up to Abu Hurairah who related that the Prophet, praise and peace be upon him, said this.
باب استحباب الدعاء في السفر 980- وعن أَبي هريرة رضي الله عنه ، قَالَ : قَالَ رسولُ الله صلى الله عليه وآله وسلم : "ثلاثُ دَعَوَاتٍ مُسْتَجَابَات لاَ شَكَّ فِيهِنَّ : دَعْوَةُ المَظْلُومِ ، وَدَعْوَةُ المُسَافِرِ ، وَدَعْوَةُ الوَالِدِ عَلَى وَلَدِهِ" رواه أَبُو داود والترمذي ، وقال : "حديث حسن" . وليس في رواية أَبي داود : "عَلَى وَلَدِهِ" .