Abdullah bin Mas’ud (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings be upon him) said: “Adopt truthfulness, for truthfulness leads to righteousness, and righteousness leads to Paradise. A man continues to speak the truth and seeks truthfulness until he is recorded with Allah as a truthful one (Siddiq). And beware of lying, for lying leads to sin, and sin leads to the Fire. A man continues to lie and seeks falsehood until he is recorded with Allah as a liar.” And in the narration of Muslim, he said: “Indeed, truthfulness is righteousness, and righteousness leads to Paradise. And indeed, lying is sin, and sin leads to the Fire.” Agreed upon.
Hadith Referenceمشكوة المصابيح / كتاب الآداب / 4824
Hadith Gradingالألبانی:مُتَّفَقٌ عَلَيْهِ | زبیر علی زئی:متفق عليه
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «متفق عليه، رواه البخاري (6094) و مسلم (2607/105)»