Those who are merciful are shown mercy by the Most Merciful. Be merciful to the inhabitants of earth and the One in the heaven will be merciful to you

Explanation

The Prophet (may Allah's peace and blessings be upon him) points out that those who show mercy to others are shown mercy by the Most Merciful with His mercy, which encompasses all things - a fitting recompense. Then, he (may Allah's peace and blessings be upon him) enjoined mercy towards all those on earth, including human beings, animals, birds, and other kinds of creatures. As recompense for that, Allah, from above His heavens, will show mercy to you.

Benefits

• Islam is the religion of mercy, and it is entirely based upon obedience to Allah and benevolence to the creation.
• Allah Almighty possesses the attribute of mercy, and He, Exalted be He, is the Most Merciful, the Ever-Merciful, and He brings mercy to His servants.
• Recompense is of the same type of action. So, the merciful people are shown mercy by Allah.