Abu Las reported,
The Messenger of Allah ﷺ provided us with camels from the charity camels to ride for the Hajj. We said, "Messenger of Allah, we do not think these will be enough to carry us."He replied, "There is no camel of ours but that on its hump is a devil. So mention the name of Allah over them when you mount them, as you have been commanded, then put them to your service, for it is Allah 
who actually carries you."
Azami 4121
Hasanعن أبي لاس الخزاعي، قال
حملنا رسول الله ﷺ على إبل من إبل الصدقة للحج، فقلنا: يا رسول الله ما نرى أن تحملنا هذه؟ قال: ما من بعير لنا إلا في ذروته شيطان، فاذكروا اسم الله عليها إذا ركبتموها كما أمركم ثم امتهنوها لأنفسكم فإنما يحمل الله عز وجل.
Ahmad (17938) and Tabarani in Al-Kabir (22/837) both narrated it through Muhammad bin Ubayd, who said, Muhammad bin Ishaq narrated to us, from Muhammad bin Ibrahim bin Harith, from Umar bin Hakam bin Thawban, from Abu Las Khuzai, who related it. Its chain is hasan, because Muhammad bin Ishaq explicitly used the word "narrated to us" in the second narration found in Imam Ahmad (17939). Ibn Khuzayma graded it sahih (2377), as did Hakim (1/444), who said, "It meets the criteria of Muslim." They added, after his statement about the sacrificial camels, the word "weak" in reference to Hajj.His statement, "as He commanded you," means as Allah, exalted is He, commanded you in His saying, "so that you may sit firmly on their backs, and then remember the favor of your Lord when you sit upon them, and say, 'Glory be to Him who has subjected these to us, for we could never have done it by ourselves. And indeed, to our Lord we shall return'" [Zukhruf 43:13–14].His statement, "make use of them," means employ them.