It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that I heard the truthful and trusted Prophet, Abu al-Qasim (peace and blessings of Allah be upon him), saying: "Mercy is only removed from the heart of the wretched."
Hadith Referenceالادب المفرد / كتاب رحمة / 374
Hadith Gradingالألبانی:حسن
Hadith Takhrij«حسن : أخرجه أبوداؤد ، كتاب الأدب ، باب فى الرحمة : 4942 و الترمذي : 3775 - انظر المشكاة : 4968»
Explanation & Benefits
Shaykh Maulana Usman Muneeb
Benefits and Issues: The absence of mercy and compassion in a person's heart is evidence of his wretchedness, and he is not deserving of being shown mercy. The Prophetic instruction is: ((Irhamu ahl al-ard yarhamkum man fi al-sama')) (Jami' al-Tirmidhi, al-Birr, Hadith: 1924) "Show mercy to the inhabitants of the earth, and the One who is in the heavens will show mercy to you."
Source: Fadlullah al-Ahad: Urdu Commentary on al-Adab al-Mufrad, Page: 374