Sayyiduna Abu Hurayrah (may Allah be pleased with him) says that Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) used to say in his sermon: Successful is the one who has been protected from desires, greed and anger, and who has been granted the ability to be truthful in speech; it will lead him to goodness. Whoever lies becomes a sinner. Then he mentioned what follows it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5805