Why is it necessary to include the name of Prophet Muhammad (peace be upon him) with the name of Allah Almighty in the Shahada, even though the hypocrites said: "We bear witness that you are indeed the Messenger of Allah. And Allah knows that you are indeed His Messenger. And Allah bears witness that the hypocrites are indeed liars"?

Uttering the two testimonies: (There is no god but Allah, and Muhammad is the Messenger of Allah), coupled with firm belief in their implications and acting upon them, is considered an essential condition for entering Islam. One testimony does not suffice without the other; rather, both are necessary together. Hypocrites utter the two testimonies with their tongues without believing in them in their hearts; they outwardly show faith while inwardly concealing disbelief, and this is their state as mentioned in the Holy Qur’an.