Two Buyers and One Seller - 1% TDS to be deducted for more than 50 Lakhs?

Hi Friends,

Two Buyers jointly purchase a plot from one seller. The value of plot is Rs. 80 Lakhs and each will contribute Rs. 40 lakhs equally. 

In this case , each buyer need to deduct 1% TDS as the plot value exceeds 50 Lakhs 

or

They need not deduct TDS as their individual contribution is less than 50 lakhs, that is 40 lakhs. only.

Kindly guide. 

Thank you.