﴿ وَمِنَ ٱلَّيْلِ فَسَبِّحْهُ وَأَدْبَٰرَ ٱلسُّجُودِ ﴾

“and in the night, too, extol His glory, and at every prayer’s end.”

and glorify Him at some part of the night that is to say perform the two evening prayers and after prostrations read adbār as the plural of dubur or idbār as the verbal noun from adbara ‘to pass’ in other words perform supererogatory prayers as prescribed by the Sunna after the obligatory ones; it is also said to mean the actual uttering of glorifications at these times with continuous praise.