Read hadith and Call to prayer

Read hadith and obey Allah by hadith 

Bismillahir rahmaanir raheem

Narrated Anas (R) : The people mentioned the fire and the bell ( they suggested those as signals to indicate the starting of prayers) and by that they mentioned the Jews and the Christians . Then Bilal was ordered to pronounce Adhan for the prayer by saying its wordings twice , and for the Iqama by saying its wordings once .

Narrated ibn Umar (R): When the Muslims arrived at Medina , they used to assemble for the prayer , and used to gueses the time for it . During those days , the practice of Adhan for the prayers had not been introduced yet . Once they discussed this problem regarding the call for prayer . Some people suggested the use of a bell like the Christians , others proposed a trumpet like the horn used by the Jews , but Umar was the first to suggest that a man should call for the prayer , so Allah's apostle ordered Bilal to get up and pronounce the Adhan for prayers .
Narrated Anas (R) : Bilal was ordered to repeat the wording of the Adhan for prayers twice , and to pronounce the wording of the Iqamas once except "Qad-qamat-is salat ."