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."