Ibn Mas'ud (RAA) narrated that the Messenger of Allah (ﷺ) said:
“Adhere (you people) to truth, for truth leads to good deeds and good deeds lead to Paradise, and if a man continues to speak the truth and makes truth his object he will be recorded as truthful before Allah. Avoid (you people) falsehood, for falsehood leads to wickedness and wickedness leads to Hell, and if a man continues to speak falsehood and makes falsehood his object he will be recorded as a liar before Allah.” Agreed upon.
English reference : Book 16, Hadith 1562
Arabic reference : Book 16, Hadith 1519