Chapter on the Detailed Explanation of Prayer, Including the Obligatory and Recommended, and What is Permissible and Not Permissible.

As for what was narrated by Sa’d ibn Abdullah from Ahmad ibn Muhammad from Ibn Abi ‘Umayr from Hammad ibn Uthman from ‘Ubaydullah ibn Ali al-Halabi from Abu Abdillah عليه السلام, who said: I asked Him عليه السلام about a man who forgot to say the Takbir until he had already entered into the prayer. Imam عليه السلام said: "Was it not his intention to say the Takbir?" I said: "Yes." Imam عليه السلام said: "Then let him continue with his prayer."