An Arabi came to the Prophet ﷺ and asked, "What is the Trumpet?"He replied, "A horn that will be blown into."
جاء أعرابي إلى النبي ﷺ فقال: ما الصور؟ قال: قرن ينفخ فيه.
Abu Dawud (4742) and Tirmidhi (2430, 3244) both narrated it through Sulayman Taymi, from Aslam Ajli, from Bishr bin Shighaf, from Abdullah bin Amr bin As, who related the hadith. The wording given here is Tirmidhi's, and its chain of transmission is sahih.Tirmidhi said in the first place, "Hasan, we do not know it except through the hadith of Sulayman Taymi." And in the second place, "Hasan sahih, we only know it through the hadith of Sulayman Taymi." In some manuscripts, the two gradings are reversed from what I have mentioned. The correct view is that it is sahih, for its narrators are trustworthy, and Taymi is Ibn Tarkhan.