Sunan At-Tirmidhi

Abdullah bin 'Amr bin Al-'As said:""A Bedouin came to the Prophet (S.a.w) and said: 'What is the Sur?' He said: 'A horn that will be blown into'"" [Abu 'Eisa said:] This Hadith is Hasan Sahih. It has been reported by more than one narrator from Sulaimãn At-Taimi, and we do not know of it except as his narration