Silsilat al-Ahadith al-Sahihah

Sahl bin Hanzaliyah (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings of Allah be upon him) passed by a camel whose back had almost touched its belly (due to its emaciation). The Prophet (peace and blessings of Allah be upon him) said: "Fear Allah regarding these mute animals. Ride them when they are in good condition, and leave them in good condition."