Hadith 23199
It is narrated from the daughter of Abu Al-Hakam, may Allah be pleased with him, that I heard the Noble Prophet, peace and blessings be upon him, say: Sometimes a person comes so close to Paradise that there remains only a distance of one cubit between him and Paradise, but then he utters a word due to which he becomes as far from Paradise as the distance between Mecca and Sana'a, or even farther.