Answered by Sayyidi al-Ḥabīb `Umar bin Hafīẓ (may Allāh preserve him and benefit us by him).
How can we strengthen the ties of brotherhood between those who have taken this spiritual path?
We can do this by reminding those who have taken this spiritual path that they are travelling companions, and that those travelling together on the same path must be united. They are all the children of the same chain of connection and this dictates that they be brothers and sisters to each other. We also need to remind them that the ṭarīqah is founded upon spreading harmony and brotherhood throughout the whole Ummah so this brotherhood should be even stronger between those affiliated to the ṭarīqah. So let us apply these things and then spread them.