Interesting earlier comments. The first one mentioning that language has no metaphysical significance is not accurate. Allah created the creation through his word 'Kun'. it's mentioned in the Quran, for those who ask for reference. 'Kun' is not just an idea or a concept, but it's a word from the divine speech. The angels also have a language, Syriac. That's ...
36.1. Allah draws emphasis and signifies the holiness of the objects being sworn.2.Allah SWT swears by the fig and olives referring the Palestine where Allah SWT sent most of the Prophets.Allah SWT swears by Mount Sinai where Prophet Musa A.S spoke to Allah SWT.Allah SWT swears by the holy city of Makkah is which is the birth pace of Prophet Muhammed pbuh.
Ruling of niqab in the light of Quran and Hadees
The following verses are among those cited by scholars as evidence for, or references to, the Punishment of the grave ( عذاب القبر ) within the Quran:
النار يعرضون عليها غدوا وعشيا ويوم تقوم الساعة أدخلوا آل فرعون أشد العذاب
The Fire, they are exposed to it morning and evening. And the Day the Hour appears [it will be said], "Make the people of ...
It is up to Allah, may Allah protect us from that punishment, and forgive our sins.
But if you commit those deeds then you're at a greater risk of getting that punishment, compared to if you didn't do any of those deeds. Allah knows best.
The statement can be of either Allah or Khidr.
قيل : هو من كلام الخضر ... وقيل : هو من كلام الله
— Tafsir al-Qurtubi
The expression فخشينا (we feared) can mean that "we knew", or that "we disliked".
قال الفراء: معنى فخشينا أي فعلمنا، وقال الزجاج: فخشينا من كلام الخضر، ومعناه كرهنا
— Lisan al-Arab, also see definition B3 and B4 in Lane'...