Abu Las reported,
The Messenger of Allah ﷺ provided us with camels from the zakat camels to ride for the pilgrimage. 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 sits a devil. So mention the name of Allah over it when you mount, as you have been commanded, then put it to your service, for it is truly Allah 
who carries the load."
Azami 4749
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.
Imam Ahmad (17938) and Tabarani in Al-Kabir (22/837) both narrated it from the hadith of 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," and he mentioned it. Its chain of transmission is hasan, because Muhammad bin Ishaq explicitly stated that he heard it directly 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 standard of Muslim." Dhahabi agreed with him. They added, after his words "the camels of the sadaqah," the word "weak," referring to camels used for Hajj.