Abu Hurairah reported,
I heard the Messenger of Allah ﷺ say, "Upon the hump of every camel sits a devil, so subdue them by riding them, for it is truly Allah who carries the load."
Azami 11188
Hasanعن أبي هريرة قال
سمعت رسول الله ﷺ يقول: إن على ذروة كل بعير شيطانا، فامتهنوهن بالركوب، وإنما يحمل الله.
No references are available.
Ibn Khuzayma narrated it in his Sahih (2547), and Hakim (1/444), both through the route of Abdullah bin Wahb, who said my informant was Ibn Abu Zinad, from his father, from Araj, from Abu Hurairah who said, then he related it. Its chain is hasan because of Ibn Abu Zinad, whose name is Abdul-Rahman bin Abu Zinad Abdullah bin Zakwan al-Madani, for his hadith is hasan.His saying, "Allah only carries," means that Allah 
strengthens the mount so that the rider can accomplish his need.