´It was narrated that Suraqah bin Ju'shum said:` "I asked the Messenger of Allah(ﷺ) about a lost camel that comes to my cisterns that I have prepared for my own camels - will I be rewarded if I give it some water to drink? He said: Yes, in every living being there is reward.'"
Related hadith on this topic
Explanation & Benefits
Maulana Ataullah Sajid
Benefits and Issues:
➊ Providing water to someone’s thirsty animal and providing food to someone’s hungry animal is also a good deed, just as providing food and water to a hungry and thirsty person is a good deed.
➋ Giving water to an animal that does not belong to anyone is also a good deed, as in the case of an immoral woman who was forgiven for giving water to a thirsty dog. See: (Sahih Muslim, Chapter: The Virtue of Giving Water and Food to Respectable Animals, Hadith: 2245)
Source: Commentary on Sunan Ibn Mājah by Mawlānā ‘Atā’ullāh Sājid, Page: 3686
Shaykh Muhammad Ibrahim bin Basheer
Benefit:
From this hadith, it is established that giving water to animals is also a great act of reward. Furthermore, it is also proven that Sayyiduna Suraqah (radi Allahu anhu), who was once an enemy of the life of the Messenger of Allah (sallallahu alayhi wa sallam), at one time became determined to martyr the Prophet (sallallahu alayhi wa sallam) in order to receive a reward from the disbelievers, but he failed in his scheme. He then had a pact of safety written by the Messenger of Allah (sallallahu alayhi wa sallam), and it was with this pact of safety that he later came to the Messenger of Allah (sallallahu alayhi wa sallam). Islam is the true religion, which all people should accept; in it alone is honor and success.
Source: Musnad al-Humaydi: Commentary by Muhammad Ibrahim bin Bashir, Page: 925