“Abu ‘Abd Allah (a.s.), has said that ’Amir al-Mu’minin (a.s.), once issued the following judgment: A man had purchased a dress with a stipulation to pay until midday. The buyer was offered profit and he wanted to sell. He (the Imam) said, ‘He must present testimony to prove that the seller agreed and the deal was binding, then he can sell it if he so wants. If he displays it in the market without selling, it makes the transaction binding.’”