Analysis of information sources in references of the Wikipedia article "مقبرة وادي السلام" in Arabic language version.
There is also the tradition that Abraham bought land in the Wadi as-Salaam (Valley of Peace) that runs through the present city, predicting that it would be from here that 70,000 of those buried in the valley would be guaranteed entrance into paradise and would then be able to intercede with Allah for others. Imam Ali is reported to have said that Wadi as-Salaam was a part of heaven.
There is also the tradition that Abraham bought land in the Wadi as-Salaam (Valley of Peace) that runs through the present city, predicting that it would be from here that 70,000 of those buried in the valley would be guaranteed entrance into paradise and would then be able to intercede with Allah for others. Imam Ali is reported to have said that Wadi as-Salaam was a part of heaven.