إِنَّ نَاشِئَةَ ٱلَّيۡلِ هِيَ أَشَدُّ وَطۡـٔٗا وَأَقۡوَمُ قِيلًا
Surely the first part of the night – it is more efficacious and more suitable for speaking.
Graphical/Basic Letter Difference - Change Meaning (general semantic shift)
وَطۡـٔٗا
efficacious
وِطَآءٗ
suitable
Hafs reads 'waṭ'an' (a Form I verbal noun meaning treading, impression, or efficacious), while the variant reads 'wiṭā'an' (a Form III verbal noun meaning agreement or conformity). This changes the meaning from the night prayer being more efficacious or heavy, to it bringing greater harmony between the heart and the tongue.
Duri Abu 'Amr, Hisham, Ibn Dhakwan, Susi
وَٱذۡكُرِ ٱسۡمَ رَبِّكَ وَتَبَتَّلۡ إِلَيۡهِ تَبۡتِيلٗا
but remember the name of your Lord and devote yourself to Him completely.
Vowel Difference (harakat) - Grammatical Case Change
رَبُّ
Lord
رَبِّ
Lord
Hafs reads 'Rabbu' with a dammah (nominative case), treating it as the start of a new sentence ('[He is] the Lord...'). The variant reads 'Rabbi' with a kasrah (genitive case), continuing the grammatical chain from the previous verse as an apposition to 'your Lord' (rabbika).
Abu Al-Harith, Duri Al-Kisa'i, Hisham, Ibn Dhakwan, Idris, Ishaq, Khalaf, Khallad, Rawh, Ruways, Shu'bah
رَّبُّ ٱلۡمَشۡرِقِ وَٱلۡمَغۡرِبِ لَآ إِلَٰهَ إِلَّا هُوَ فَٱتَّخِذۡهُ وَكِيلٗا
Lord of the East and the West – (there is) no god but Him, so take Him as a guardian,
وَٱصۡبِرۡ عَلَىٰ مَا يَقُولُونَ وَٱهۡجُرۡهُمۡ هَجۡرٗا جَمِيلٗا
and be patient with what they say, and forsake them gracefully.
فَعَصَىٰ فِرۡعَوۡنُ ٱلرَّسُولَ فَأَخَذۡنَٰهُ أَخۡذٗا وَبِيلٗا
But Pharaoh disobeyed the messenger, and We seized him harshly.
فَكَيۡفَ تَتَّقُونَ إِن كَفَرۡتُمۡ يَوۡمٗا يَجۡعَلُ ٱلۡوِلۡدَٰنَ شِيبًا
If you disbelieve, how will you guard (yourselves) against a Day which will turn the children grey,
ٱلسَّمَآءُ مُنفَطِرُۢ بِهِۦۚ كَانَ وَعۡدُهُۥ مَفۡعُولًا
on which the sky will be split open and His promise comes to pass?
إِنَّ هَٰذِهِۦ تَذۡكِرَةٞۖ فَمَن شَآءَ ٱتَّخَذَ إِلَىٰ رَبِّهِۦ سَبِيلًا
Surely this is a Reminder, and whoever pleases takes a way to his Lord.
Vowel Difference (harakat) - Grammatical Case Change
وَنِصۡفَهُۥ وَثُلُثَهُۥ
or a half of it or a third of it
وَنِصْفِهِۦ وَثُلُثِهِۦ
and (sometimes nearly) half of it, and (sometimes nearly) one-third of it
The variant reads the words for 'half' and 'third' in the genitive case (conjoined to 'two-thirds' after the preposition 'min'), meaning they stood in prayer for less than half or a third. Hafs reads them in the accusative case (conjoined to 'nearly/less than'), meaning they stood for exactly half or a third.
Duri Abu 'Amr, Hisham, Ibn Dhakwan, Ibn Jummaz, Ibn Wardan, Qalun, Rawh, Ruways, Susi, Warsh