Sayyiduna Abu Hurayrah (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) said: "Whoever has three qualities, Allah will make his reckoning easy and will admit him into Paradise by His mercy." They said: O Messenger of Allah! What are they? He said: "Giving to the one who deprives you, pardoning the one who wrongs you, and maintaining ties with the one who cuts you off." He said: If I do that, what will I get, O Messenger of Allah? He said: "Your reckoning will be easy, and Allah will admit you into Paradise by His mercy."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشهادات / 21092