Ibn Mas'ud (May Allah be pleased with him) reported

The Messenger of Allah (ﷺ) said, "Truth leads to piety and piety leads to Jannah. A man persists in speaking the truth till he is recorded with Allah as a truthful man. Falsehood leads to transgression and transgression leads to the Hell-fire. A man continues to speak falsehood till he is recorded with Allah as a great liar."

[Al-Bukhari and Muslim].