I don’t know if it’s done here too but in the South I found that most dargahs had a sandal ceremony during the urs.
In The History of Bahamani Kingdom: A Review
By Dr. Santosh Kumar Jadhav
There’s a description
Here a khadim is rubbing a sandal wood piece to make the paste in dargah of Hazrat Gesu Daraz Banda Nawaz in Gulbarga