We are deprived of his science![ Imam Mahdi( hgr)]
…وَ بِئْرٍ مُعَطَّلَةٍ وَ قَصْرٍ مَشِيدٍ [حج/۴۵]

“So many wells; full of clear water which are lying idle and neglected, and castles which are lofty and well-built (Hajj/45)”

That was an example for Ale Muhammad (pbu th)[ Prophet Muhammd( pbuh&h), her dignified daughter” Fatima( pbuh) and 12 imams( pbu th).]
«بِئْرٍ مُعَطَّلَة»
By unused well it means to a well which no one drains water from it!
it refers to the imam who is absent[ the 12 imam; imam Mahdi( hgr)] and no one uses from his science until he emerges

«قَصْرٍ مَشِيد»
And by the constructed castle it means the high castle which is an example for Amīr al-Mu’minīn[imam Ali](pbuh) and imams and their virtues which have been printed in many parts of the world

collecting date:
۹/۷/۲۰۱۶

Source:

۱-“Al-Burhān fī tafsīr al-Qurʾān”.Vol. 3, P.893
۲-Al Husaini al Bahrani, S. Hashim b. S. b. I.”Tafsīr al-Qummī”.Vol.2, P.?