Clicking on the Image on the left will reveal the extent of the restoration which has taken place between 1993 and 1996.
Clicking on the binoculars will reveal the area below the muqqarnas in which there is an inscription which has been reconstructed from the only two words which were extant in the early 1960s. The reconstructed inscription, which is from the 3rd Sura of the Qura'n reads as follows:
Most surely the first house appointed for men is the one at Bekka, blessed and a guidance for the nations. In it are clear signs, the standing place of Ibrahim, and whoever enters it shall be secure.Qura'n III:97
The allusion to "the standing place of Ibrahim" refers to a more detailed description of the house at "Bekka", otherwise the Black Stone at Meccah known as the Kabah. this is found in Sura II:125 where the emphasis on security, or asylum is made more explicit. This in turn raises another interesting possibility about the purposes of the gateway and its adjoining reception chamber, namely that it may have been a place of asylum.
The inscriptions on the shaft are in seven sections. The image below shows them from right to left, matching the ones which run from top to bottom on the shaft of the minaret.

Which translated mean
Allah, The Great, Allah, Muhammad, and 'Ali, and Hassan, and Hossein