Is it permissible to differ in the principles as it is permissible in the branches?

The Shaykh : It is permissible to differ in what they call the principles, just as it is permissible in the branches. However, of the types of disagreement I mentioned earlier, there are two: one that stems from differences in understanding, as occurred among the Companions of the Messenger of Allah (peace and blessings be upon him) in the incident of the prayer at Banu Qurayzah. This is a natural occurrence. The other is intentional, deliberate disagreement that carries with it partisan factionalism and sectarian fanaticism. Whether this second type of disagreement is in what they call the branches or the principles, it is what the Lord of the Worlds has forbidden in His Noble Book, in a verse mentioned previously: . In contrast to the other type of disagreement, which results from differences in understanding, whether that understanding concerns what they call a principle or a branch, those who differ in that matter are excused.