And between them will be a partition [i.e., wall], and on [its] elevations are men1 who recognize all2 by their mark. And they call out to the companions of Paradise, "Peace be upon you." They have not [yet] entered it, but they long intensely.
Translation: Saheeh International (English)
1 Those whose scales are balanced between good and evil deeds.
2 Both the inhabitants of Paradise and those of Hell.
Between these two groups – the companions of Paradise and the companions of Hell – is a partition called ‘al-A‘rāf’, meaning ‘the Heights’. On this partition are people whose good and bad actions are equal. They know the companions of Paradise by their signs, such as the light on their faces, and the companions of Hell by their signs, such as the darkness on their faces. These people of the partition call the companions of Paradise, honouring them, saying, ‘Peace be upon you’. They do not enter Paradise yet, but they hope to enter it through Allah’s mercy.