Nikkah is the Islamic marriage contract between a man and a woman. It is a formal agreement that outlines the rights and responsibilities of both parties. The ceremony typically includes the recitation of verses from the Quran and the presence of witnesses. During the Nikkah ceremony, the groom offers a Mahr, which is a mandatory gift to the bride. This can be in the form of money, jewelry, or other valuables. The contract is signed by both parties, symbolizing their commitment to each other in accordance with Islamic teachings.