Hadith 14:2
Zaid b. Khalid told that he heard God’s Messenger giving command that an unmarried man who committed fornication should receive a hundred lashes and be banished for a year. Bukhari transmitted it.
وَعَنْ زَيْدِ بْنِ خَالِدٍ قَالَ: سَمِعْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَأْمُرُ فِيمَنْ زَنَى وَلَمْ يُحْصَنْ جَلْدَ مِائَةٍ وَتَغْرِيبَ عَامٍ. رَوَاهُ البُخَارِيّ
Original Reference: Mishkat al-Masabih 3556