It is narrated from Hazrat Buraidah (may Allah be pleased with him) that the Holy Prophet (peace and blessings be upon him) said: The ownership of those lands, animals, and slaves over which they accept Islam will remain with them, and nothing will be obligatory upon them in this regard except zakat.
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 23020
Hadith Gradingحکم دارالسلام:إسناده ضعيف لضعف ليث بن أبى سليم