 أَبِی ره قَالَ حَدَّثَنَا سَعْدُ بْنُ عَبْدِ اللَّهِ عَنْ أَحْمَدَ بْنِ أَبِی عَبْدِ اللَّهِ عَنْ مُحَمَّدِ بْنِ مُوسَی الْیَقْطِینِیِّ عَنِ الدِّهْقَانِ عَنْ دُرُسْتَ عَنْ إِبْرَاهِیمَ بْنِ عَبْدِ الْحَمِیدِ عَنْ أَبِی الْحَسَنِ ع قَالَ قَالَ رَسُولُ اللَّهِ ص إِذَا رَکِبَ الرَّجُلُ الدَّابَّهَ فَسَمَّی رَدِفَهُ مَلَکٌ یَحْفَظُهُ حَتَّی یَنْزِلَ فَإِنْ رَکِبَ وَ لَمْ یُسَمِّ رَدِفَهُ شَیْطَانٌ فَیَقُولُ لَهُ تَغَنَّ فَإِنْ قَالَ لَا أُحْسِنُ قَالَ لَهُ تَمَنَّ فَلَا یَزَالُ یَتَمَنَّی حَتَّی یَنْزِلَ وَ قَالَ مَنْ قَالَ إِذَا رَکِبَ الدَّابَّهَ بِاسْمِ اللَّهِ وَ لَا حَوْلَ وَ لَا قُوَّهَ إِلَّا بِاللَّهِ- الْحَمْدُ لِلَّهِ الَّذِی هَدانا لِهذا وَ سُبْحانَ الَّذِی سَخَّرَ لَنا هذا وَ ما کُنَّا لَهُ مُقْرِنِینَ إِلَّا حُفِظَتْ لَهُ نَفْسُهُ وَ دَابَّتُهُ حَتَّی یَنْزِلَ.
1.  Imam Musa Kadhim (a.s.) narrates that the Holy Prophet (s.a.w.s.) said, “One who says Bismillaah  before mounting an animal, an angel sits behind that person and protects him till he gets down from that animal. However if he does not say Bismillaah,  the Satan sits behind him and asks him to sing. If he says that he does know how to sing he asks him to  make  a  wish.  Now  the  person  continuously  goes  on wishing for something or the other till he gets down. One who recites: Bismillaahi wa laa h’aula wa laa quwwata illaa billaahil h’amdu lillaahilladhee hadaanaa lihaadhaa wa sub- h’aanalladhee  sakhkhara  lanaa  haadhaa  wa  maa  kunnaa lahu  muqrineen,  he  and  his  mount  reach  the  destination safely.”