The Prophet ﷺ said: Let the Abyssinians alone as long as they let you alone, and let the Turks alone as long as they leave you alone.  

عَنْ رَجُلٍ مِنْ أَصْحَابِ النَّبِيِّ ﷺ عَنِ النَّبِيِّ ﷺ أَنَّهُ قَالَ دَعُوا الْحَبَشَةَ مَا وَدَعُوكُمْ وَاتْرُكُوا التُّرْكَ مَا تَرَكُوكُمْ