It is narrated from Sayyiduna Zayd bin Khalid al-Juhani (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) gave judgement concerning an unmarried person who commits adultery: a hundred lashes and exile for a year.
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 5179