Wa bainahumaa hijaab; wa 'alal A'raafi rijaaluny ya'rifoona kullam biseemaahum; wa naadaw Ashaabal jannati an salaamun 'alaikum; lam yadkhuloohaa wa hum yatma'oon (al-ʾAʿrāf 7:46)
And between them will be a partition [i.e., wall], and on [its] elevations are men who recognize all 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. (Al-A'raf [7] : 46)