Sayyiduna Suhayb bin Sinan (may Allah be pleased with him) narrates: The Prophet (peace and blessings be upon him) said: "Whoever fixes a dowry for a woman while Allah Almighty knows that he will not pay it to her, and he deceives her in the name of Allah and makes her private part lawful for himself falsely, when that man appears before Allah Almighty on the Day of Resurrection, he will be (counted as) a fornicator."
Imam Ahmad and Imam al-Tabarani recorded it; the chain of Imam Ahmad contains a narrator who is not named, and the remaining narrators of this report are thiqat (trustworthy); the chain of Imam al-Tabarani contains narrators whom I do not know.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب النكاح / 7505