Be mindful of your thoughts; strive to think positively; seek forgiveness from Allah when needed .

This hadith is narrated by Abu Huraira and it speaks about the mercy of Allah. It states that even if a person has evil thoughts in their mind, Allah will forgive them if they do not talk about or act upon those thoughts. This teaches us to be mindful of our thoughts and to keep away from any kind of negative thinking. We should also remember that no matter how bad our thoughts are, we can still be forgiven by Allah if we don't give into them and instead turn to Him for forgiveness. This hadith also reminds us that we should always strive to think positively and stay away from any kind of negative thinking or behavior.