Complex sentence: The dome of the second mausoleum attached the the mosque was never completed, and dormitories for Sufi students who studied at the mosque were not erected, despite an allocation of 20,000 dinars toward them.
Split into simpler sentences: The dome of the second mausoleum attached the the mosque was never completed. A separate building for use as dormitories by Sufi students who studied at the madrasa were not immediately erected, despite an allocation of 20,000 dinars toward them.