Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said that Jamilah bint al-Salul came to the Prophet (peace and blessings be upon him), intending to seek khul'. He (peace and blessings be upon him) asked: "What was your dowry (mahr)?" The woman said: A garden. He (peace and blessings be upon him) said: "Return his garden to him."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب القسم والنشوز / 14841