Sayyidah Aishah (may Allah be pleased with her) said: Whenever the Prophet (peace and blessings be upon him) was given a choice between two things, he (peace and blessings be upon him) always chose the easier, as long as there was no wrong in it. If there was wrong in it, he (peace and blessings be upon him) was the farthest of people from it. The Prophet (peace and blessings be upon him) never took revenge for his own sake, except when the sanctity of Allah was being violated; then he took revenge solely for Allah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13283