Sayyiduna Ibn Umar (may Allah be pleased with him) said that a man asked in the presence of the Messenger (peace and blessings be upon him): How often should we pardon servants? He repeated this question three times, then he (peace and blessings be upon him) said: "Seventy times in a day."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النفقات / 15799