Sayyiduna Abdullah (may Allah be pleased with him) narrates: The Prophet Muhammad (peace and blessings be upon him) said: “It is obligatory upon you to adopt truthfulness, for truthfulness leads to righteousness, and righteousness leads to Paradise. A man continues to speak the truth until he is recorded with Allah as a truthful person. And falsehood leads to sin, and sin leads to Hellfire. A man continues to lie until he is recorded with Allah as a liar.”
Hadith Referenceصحیح ابن حبان / كتاب البر والإحسان / 274
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - المصدر السابق: ق.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرطهما.