Answered by Sayyidi Habib Umar bin Hafiz (may Allah protect him and benefit us by him).
We sometimes find difficulty in working with people attached to other shuyukh. What should we do?
You should do what you can to overcome your differences with them through your perception, intention and feelings for them. Your differences should not cause you to distance yourself from each other and they should not destroy the spirit of co-operation. They may not agree with something you are doing, so do not force them to take part in it. If it is something important that cannot be left, do it in a way that does not cause friction. If it is something that can be left, then do something else which does not cause any friction. We should help and co-operate if they are doing something which does not conflict with our principles. If what they are doing will cause conflict or harm to the dawah we very gently decline to get involved.