Abdullah bin Salih said: Al-Layth held the view that the prescribed punishment (hadd) should be carried out in the land of Rum (the Byzantines), because Allah Almighty says: "And whomever Allah intends to put to trial, you can do nothing at all for him against Allah." [Surah al-Ma'idah: 41]
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18228