Silsilah as-Sahihah 2849 — Reward for Kindness to Living Beings

It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever shows mercy, even if it is in the matter of slaughtering a bird, Allah Almighty will show mercy to him on the Day of Resurrection."