Hadith 31:26
Sahih Maqtu' (Al-Albani)
Qatadah reported 'Umar b. al-Khattab (ra) as saying:
If anyone gets possession of a relative who is within the prohibited degrees, that person becomes free.
حَدَّثَنَا مُحَمَّدُ بْنُ سُلَيْمَانَ، حَدَّثَنَا عَبْدُ الْوَهَّابِ، عَنْ سَعِيدٍ، عَنْ قَتَادَةَ، عَنِ الْحَسَنِ، قَالَ مَنْ مَلَكَ ذَا رَحِمٍ مَحْرَمٍ فَهُوَ حُرٌّ
Original Reference: Sunan Abi Dawud 3951