Abdullah ibn Mas’ud reported: The Messenger of Allah, peace and blessings be upon him, said, “Verily, truthfulness leads to righteousness and righteousness leads to Paradise. A man may speak the truth until he is recorded with Allah as truthful. Verily, falsehood leads to wickedness and wickedness leads to the Hellfire. A man may tell lies until he is recorded with Allah as a liar.”

Source: Sahih Muslim 2607

Grade: Sahih (authentic) according to Muslim

عَنْ عَبْدِ اللَّهِ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِنَّ الصِّدْقَ يَهْدِي إِلَى الْبِرِّ وَإِنَّ الْبِرَّ يَهْدِي إِلَى الْجَنَّةِ وَإِنَّ الرَّجُلَ لَيَصْدُقُ حَتَّى يُكْتَبَ صِدِّيقًا وَإِنَّ الْكَذِبَ يَهْدِي إِلَى الْفُجُورِ وَإِنَّ الْفُجُورَ يَهْدِي إِلَى النَّارِ وَإِنَّ الرَّجُلَ لَيَكْذِبُ حَتَّى يُكْتَبَ كَذَّابًا

2607 صحيح مسلم كِتَاب الْبِرِّ وَالصِّلَةِ وَالْآدَابِ بَاب قُبْحِ الْكَذِبِ وَحُسْنِ الصِّدْقِ وَفَضْلِهِ

http://dailyhadith.abuaminaelias.com/2011/06/05/honesty-leads-to-paradise-dishonesty-leads-to-hell/