“The Messenger of Allah ﷺ said: ‘The night prayers are (to be offered) two by two. Say the Tashah-hud after each two Rakʿah, and raise your hands in all humility like one who is poor and needy and say: ‘Allāhummaghfir lī (O Allah, forgive me).’ And whoever does not do that, it is imperfect.’” (Using translation from Ibn Mājah 1325)
عَنْ رَسُولِ اللهِ ﷺ قَالَ الصَّلَاةُ مَثْنَى مَثْنَى وَتَشَهَّدُ فِي كُلِّ رَكْعَتَيْنِ وَتَبَاءَسُ وَتَمَسْكَنُ وَتُقْنِعُ يَدَيْكَ وَتَقُولُ اللهُمَّ اللهُمَّ فَمَنْ لَمْ يَفْعَلْ ذَلِكَ فَهِيَ خِدَاجٌ