Mishkat al-Masabih 30 Fine Qualities كتاب المناقب 217

وَعَنْ أَبِي مُوسَى أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ لَهُ: «يَا أَبَا مُوسَى لَقَدْ أُعْطِيْتَ مِزْمَارًا مِنْ مَزَامِيرِ آل دَاوُد» . مُتَّفق عَلَيْهِ

Abu Musa told that the Prophet said to him, “You have been given one of the pipes of David[*], Abu Musa.” *Literally, “of the family of David.” The meaning is that he has a fine voice which bears some resemblance to David’s in quality. Bukhari and Muslim.