Sayyiduna Uqbah bin Amir (may Allah be pleased with him) said: I said: O Messenger of Allah, in what lies the salvation of the believer? He (peace and blessings be upon him) said: "Guard your tongue, let your house suffice you, and keep weeping over your sins."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14815