It is narrated from Nafi' (may Allah have mercy on him) that a man asked Sayyiduna Abdullah bin Umar (may Allah be pleased with them both): "I have a maternal uncle who left (divorced) his wife, and this has brought him great grief and severe distress. I want to marry that woman, though he has not told me to do so and he does not know about it (is it permissible to do this?)." Sayyiduna Ibn Umar (may Allah be pleased with them both) said: "No, unless you marry her with a marriage of genuine desire (a real marriage): if she suits you, you keep her, and if you dislike her, you part from her (any other form is not valid); for in the time of the Messenger of Allah (peace and blessings be upon him) we used to count this as sifah (fornication)."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Umar bin Nafi' except Abu Ghassan Muhammad bin Mutarrif."
Hadith Referenceالمعجم الأوسط / باب الميم / 9102
Hadith Takhrij«أخرجه الطبراني فى «الأوسط» برقم: 6246»