Muwatta Malik, 375

Yahya related to me from Malik from Nafi that Umar ibn al-Khattab used to order the rows to be straightened, and when they had come to him and told him that the rows were straight he would say the takbir

Nafé a rapporté que Omar Ibn Al-Khattab ordonnait d'égaliser les rangs. Une fois, renseigné, que les rangs sont égalisés, il faisait le takbir (signe du commencement de la prière)