And bow in homage part of the night, and glorify Him far into the night.
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Tafseer
'Abdullāh Ibn 'Abbās / Muḥammad al-Fīrūzabādī
تفسير : (and worship him (a portion) of the night) pray the prayer of maghrib and 'isha'. (and glorify him through the livelong night) pray to him at night, this refers to supererogatory prayers; it is also said that the night prayer was made compulsory on him but not on his companions.
Jalāl al-Dīn al-Maḥallī
تفسير : and prostrate to him for a portion of the night, that is, at after sunset (maghrib) and at night (‘ishā’), and glorify him the length of the night: perform supererogatory prayers during it, as mentioned above, for either two thirds, a half or a third of it.