The Prophet ﷺ said, "Leave the Abyssinians alone as long as they leave you alone, and leave the Turks alone as long as they leave you alone."
حدثنا عيسى بن محمد الرملي حدثنا ضمرة عن السيباني عن أبي سكينة رجل من المحررين
عن النبي ﷺ أنه قال دعوا الحبشة ما ودعوكم واتركوا الترك ما تركوكم
Hadith 3178, from the hadith takhrij [hasan]Nasai narrated it in jihad, chapter on the campaign against the Turks and the Abyssinians, from Damra bin Rabia.Saybani is Abu Zura Yahya bin Abu Amr, and it has a hasan corroborating witness. See Nayl al-Maqsud: 4309.