Provisionally ceasefire agreement announced Wednesday between Israel and Hamas will begin with an initial six-week phase, include the release of 33 hostages and hundreds of Palestinian prisoners, and allow the entry of 600 aid trucks a day, according to a copy of the agreement obtained by The New York Times.

The agreement requires Hamas to release three hostages on the first day, four more on the seventh day and 26 more over the next five weeks, the document said. In exchange, Israel must release 30 to 50 Palestinian prisoners for each hostage, including some serving life sentences, the agreement said.

Among the 33 hostages who will be released in the first phase are women and children, men over 50 years old and sick and wounded people. It is still unclear how many of the 33 are alive, but Israeli officials estimate that most are.

On the seventh day, Israel would have to withdraw its forces in Gaza to the area in the center of the enclave, and Palestinians displaced in southern Gaza could begin to return to the northern part of the territory, the document said.

Hundreds of thousands of Palestinians in southern Gaza have been living in tents, makeshift shelters, rented houses and relatives’ apartments for more than a year. Many of those planning to return to the north are likely to find their homes and neighborhoods destroyed, especially residents of Jabaliya, a town in northern Gaza.

The interim deal says at least 60,000 temporary homes and 200,000 tents will be delivered to Gaza during the initial phase.

While the deal calls for 600 trucks a day to enter, United Nations officials said increasing the flow of humanitarian aid to that level would be challenging. Israeli restrictions, looting, a shortage of truck drivers and other factors have made it difficult to get enough aid to Gaza, according to officials. The current number of trucks entering Gaza daily is well below 600.

By the 16th day of the first phase, negotiations would begin on the second phase of the deal – also lasting six weeks – particularly on details related to the further exchange of hostages and Palestinian prisoners.

During the second phase, Israel and Hamas would declare a “permanent cessation of hostilities,” Israeli forces would withdraw from Gaza, and the remaining live hostages would be exchanged for Palestinian prisoners, the deal said.

Hamas has long said it would only agree to a deal to end the war, but Israeli Prime Minister Benjamin Netanyahu has rejected an end to the conflict, indicating he may seek to resume fighting the group after freeing some hostages.