We are deprived of [Imam Mahdī (hgr)] `s knowledge!
This is an example for Ale Muhammad1 (pbu th);
«بِئْرٍ مُعَطَّلَة» is a well which is lying idle and neglected!
And it refers to the Imam [Mahdi (hgr)] who is absent [occulted]
and we can`t take advantage of his knowledge light, till the Emergence time.