The meaning of the phrase "and in the cause of Allah"

The Shaykh : He said: What is the cause of Allah, the Exalted? Yes, the well-known view among the scholars, specifically the majority of them, is that the phrase "in the cause of Allah" means jihad in the cause of Allah. Therefore, from zakah, one should allocate what is sufficient for jihad in the cause of Allah, whether it is distributed to the mujahideen or used for weapons. In other words, there is no difference between giving the mujahid what he needs to fight with or purchasing weapons for the mujahideen to strengthen themselves for jihad. If you ask, "Why do we not give it to the mujahid himself?" we say that Allah the Exalted made it a category connected by the preposition "in" (fi), not by the preposition "for" (li) which indicates ownership. Consequently, the destination for the zakah is jihad, whether it is given to the mujahideen or used to buy weapons for them.