Narrated Abu Qatada bin Rib'i Al-Ansari: A funeral procession passed by Allah's Apostle who said, "Relieved or relieving?" The people asked, "O Allah's Apostle! What is relieved and relieving?" He said, "A believer is relieved (by death) from the troubles and hardships of the world and leaves for the Mercy of Allah, while (the death of) a wicked person relieves the people, the land, the trees, (and) the animals from him." (Book #76, Hadith #519)
Those who believed and those who suffered exile and fought (and strove and struggled) in the path of Allah,- they have the hope of the Mercy of Allah. And Allah is Oft-forgiving, Most Merciful.
( سورة البقرة , Al-Baqara, Chapter #2, Verse #218)