Answered by Sayyidi Habib Umar bin Hafiz (may Allah protect him and benefit us by him)
If we come across a new dhikr or dua should we take permission before reciting it?
If it is from the Sunnah there is no need to take permission. Likewise there is no need to take permission before reciting the duas and adhkar of the great Imams of the Ummah as long as the meaning is clear and they are easy to read. Besides that, permission should be sought. It is always best to consult your shaykh before taking on a new wird as he knows what is most suitable for your spiritual state.