Question Summary:
Is it permissible to use an Institutes item without permission?

Question Detail:

If something is lieong on a ground of a institute and no one picks it up for days can we pick it up amd use it for own use ?

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykumwa-rahmatullāhiwa-barakātuh.
You may seek the permission of the Institute to use the item.
And Allah Ta’āla Knows Best
Zakir Husain
Student DarulIftaa
Michigan, U.S.A 
Checked and Approved by,
Mufti Ebrahim Desai.