It is narrated from Sayyiduna Sahl bin Hunayf (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Do not be harsh upon yourselves, for those before you were destroyed only because of their harshness upon themselves, and you will find their remnants in the hermitages and monasteries."
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 5530