Fortress of the Muslim (Hisn al-Muslim)
حصن المسلم
(99) Chapter: When the mounted animal (or mean of transport) stumbles
(99) الدعاء إذا تعس المركوب
Hisn al-Muslim 210 
Bismillāh. With the Name of Allah. Reference: Abu Dawud 4/296. Al-Albani graded it authentic in Sahih Abu Dawud 3/941.
بِسْـمِ اللهِ
Reference : Hisn al-Muslim 210