"Neither cool nor of any avail against the flame," meaning: neither cold in the shadow nor generous in the dwelling.
﴿لَا ظَلِيلٍ وَلا يُغْنِي مِنَ اللهب﴾ أَيْ: لَا بَارِدٍ فِي الظِّلِ وَلَا كريم فِي الْمنزل
