Is the saying: "Leave the Turks as long as they leave you, and leave the Abyssinians as long as they leave you," an authentic Prophetic Hadith from the Messenger of Allah, peace and blessings be upon him? And what is its interpretation if it is authentic?

The summary of the Fatwa (definition) is as follows: The hadith (definition): (Leave the Abyssinians as long as they leave you, and leave the Turks as long as they leave you) is a hasan (definition) (good) hadith. The Turks mentioned are not those in Turkey, but rather a people from the East. The hadith commands to refrain from fighting them as long as they leave the Muslims alone. However, if they commit aggression, then defense becomes obligatory. Perhaps the reason for this is their formidable strength, and the remoteness and ruggedness of their lands. This demonstrates the Prophet's - peace and blessings be upon him - mercy towards his Ummah.