Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
abudawud:3205ʿAbbād b. Mūsá > Ismāʿīl / Ibn Jaʿfar > Isrāʾīl > Abū Isḥāq > Abū Burdah from his father

On the authority of his father: The Messenger of Allah ﷺ commanded us to proceed to the land of Negus. Mentioning the rest of the tradition he said that Negus said: I bear witness that he is the Messenger of Allah ﷺ, and it is he about whom Christ son of Mary gave good news. It I were not in the land which I am, I would come to him and carry his shoes.  

أبو داود:٣٢٠٥حَدَّثَنَا عَبَّادُ بْنُ مُوسَى حَدَّثَنَا إِسْمَاعِيلُ يَعْنِي ابْنَ جَعْفَرٍ عَنْ إِسْرَائِيلَ عَنْ أَبِي إِسْحَاقَ عَنْ أَبِي بُرْدَةَ عَنْ أَبِيهِ قَالَ

أَمَرَنَا رَسُولُ اللَّهِ ﷺ أَنْ نَنْطَلِقَ إِلَى أَرْضِ النَّجَاشِيِّ فَذَكَرَ حَدِيثَهُ قَالَ النَّجَاشِيُّ أَشْهَدُ أَنَّهُ رَسُولُ اللَّهِ ﷺ وَأَنَّهُ الَّذِي بَشَّرَ بِهِ عِيسَى ابْنُ مَرْيَمَ وَلَوْلاَ مَا أَنَا فِيهِ مِنَ الْمُلْكِ لأَتَيْتُهُ حَتَّى أَحْمِلَ نَعْلَيْهِ