Beware of the Offer, Acceptance, Consideration Trap!

Question: Rohan and Saurav are friends since college. They agreed to start a business together and decided to draft a partnership deed. In the deed, it is mentioned that Rohan will contribute Rs 5,00,000 cash and Saurav will bring a laptop worth Rs 4,00,000. After drafting the deed, Saurav's laptop is stolen and he has no way of replacing it. Now, Rohan wants to enforce the partnership deed against Saurav for the laptop. But Saurav says he never agreed to bring a laptop. Can Rohan enforce the partnership deed against Saurav?

Dono ko lagta hai ki yeh sawal bahut easy hai, par yeh trap hai, yaar! Most people ke paas hai ki yeh sawal to consideration ka hai, to agreement toda hai.