Which great companion, upon embracing Islam, imposed an economic blockade on Quraysh?

The questioner refers to the esteemed companion Thumamah ibn Uthal, who embraced Islam and came to Mecca as an Umrah pilgrim. Someone said to him, "Have you apostatized?" He replied, "No, but I have submitted to Muhammad, the Messenger of Allah, peace and blessings be upon him. And by Allah, not a single grain of wheat from Yamamah will reach you until the Prophet, peace and blessings be upon him, permits it." The story of his conversion to Islam is mentioned in Sahih al-Bukhari, Sahih Muslim, and other collections.