There is a question on travel.stackexchange.com which has a translation of the Quran verse 24:36 as
فِي بُيُوتٍ أَذِنَ اللَّهُ أَن تُرْفَعَ وَيُذْكَرَ فِيهَا اسْمُهُ يُسَبِّحُ لَهُ فِيهَا بِالْغُدُوِّ وَالْآصَالِ
(Lit is such a Light) in houses, which Allah hath permitted to be raised to honour; for the celebration, in them, of His name: In them is He glorified in the mornings and in the evenings, (again and again)
And we need to know what "Lit is such a Light" does mean ?