Question Summary:
Is partnership allowed in a property where as one partner pays more than the other?

Question Detail:

I have a question related to property:
Me and my friend purchased twin plots in which I made efforts in arranging the twin plots. Twin plots were set to X value example $100,000 and me and my friend purchased both twin plots, my friend left to me I paid $40,000 and my friend paid $60,000 while my friend did not know that I paid $40,000 and he assumed that I also paid $50,000 which he did not stress to know how much I paid. Is it allowed in Islam to do this type of business as $10,000 I took for reward of efforts in arranging twin plots.

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
 
The numbers in your question do not match the query. If the twin plots were $100,000, and you put in $40,000 and your friend put in $60,000, that makes $100,000 in total. There is no issue with you taking $10,000.
Nevertheless, if you wish to take any money as commission for your efforts, you should specify that at the outset. You can not simply assume an X amount of money as commission.     
 
 
And Allah Ta’āla Knows Best
AbdulMannan Nizami
Student Darul Iftaa
Chicago, USA
Checked and Approved by,
Mufti Ebrahim Desai.
www.daruliftaa.net