‏الصلاة : Hadeeth No:856 Anas reported: The Prophet of Allaah (sallAllaahu alayhi wa sallam) said: Complete the bowing and prostration well. By Allaah, 1 see you behind my back as to how you bow and prostrate or when you bow and prostrate....

‏الصلاة : Hadeeth No:735 Ibn Umar reported: When the Muslims came to Medina, they gathered and sought to know the time of prayer but no one summoned them. One day they discussed the matter, and some of them said: Use something like the bell of the Christians and some of them said: Use horn like that of the Jews. Umar said: ...