A provision in the proposed Memorandum of Understanding (MOU) between the US and Iran will allow Iran to begin selling oil and fuel immediately upon its signing, The Wall Street Journal reported Tuesday, citing people familiar with the agreement.

According to the WSJ report, the same provision allows Iran to use banking, transportation, and insurance services to facilitate sales.

The exact details of the MOU have been under contention for the past few days, since US President Donald Trump announced the agreement on Sunday.

Outside the countries directly involved in the negotiations, the details of the deal have not been made public. Notably, on Tuesday, a source confirmed to The Jerusalem Post that Israel asked to see the agreement’s text but was denied.

Speaking to the press at the G7 summit in France, Trump offered some insight into the agreement's clauses and said he intended to "go over the document with the media in a couple of days."

The memorandum will reportedly be signed in Switzerland on Friday, and according to documents seen by Al Arabiya English, the final agreement will be adopted through a binding UN Security Council resolution.

Amichai Stein contributed to this report.

This is a developing story.