Qabisah bin Jabir (may Allah have mercy on him) said that Sayyiduna Umar (may Allah be pleased with him) said: If one who carries out halalah or one for whom it is carried out is brought to me, I will stone them both.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 14191