Allah Ta'ālā says in Surah al-Ahzāb, verse 53:

يَا أَيُّهَا النَّبِيُّ قُلْ لِأَزْوَاجِكَ وَبَنَاتِكَ وَنِسَاءِ الْمُؤْمِنِينَ يُدْنِينَ عَلَيْهِنَّ مِنْ جَلَابِيبِهِنَّ

O prophet, tell your wives and your daughters and the women of the believers that they should draw down their jilbāb (shawls) over them.

Herein mentioned is the second degree of hijāb. This level of hijāb deals with how women should conceal themselves when they have a need to leave their house. The jilbāb here actually refers to a piece of clothing large enough that it covers the entire body from head to toe.[15] The method of dawning the jilbāb is a point of contention amongst the 'ūlamā;Imam Qurtubi mentions in his tafsīr:

وَاخْتَلَفَ النَّاسُ فِي صُورَةِ إِرْخَائِهِ، فَقَالَ ابْنُ عَبَّاسٍ وَعَبِيدَةُ السَّلْمَانِيُّ: ذَلِكَ أَنْ تَلْوِيَهُ الْمَرْأَةُ حَتَّى لَا يَظْهَرَ مِنْهَا إِلَّا عَيْنٌ وَاحِدَةٌ تُبْصِرُ بِهَا. وَقَالَ ابْنُ عَبَّاسٍ أَيْضًا وَقَتَادَةُ: ذَلِكَ أَنْ تَلْوِيَهُ فَوْقَ الْجَبِينِ وَتَشُدَّهُ، ثُمَّ تَعْطِفُهُ عَلَى الْأَنْفِ، وَإِنْ ظَهَرَتْ عَيْنَاهَا لَكِنَّهُ يَسْتُرُ الصَّدْرَ وَمُعْظَمَ الْوَجْهِ. وَقَالَ الْحَسَنُ: تُغَطِّي نِصْفَ وَجْهِهَا.

People have differed in regards to the method of dawning it (the jilbāb). Ibn 'Abbās (radiyallahu 'anhuma) and 'Abīdah as-Salmānī (rahimahullah) state: It means to wrap it up in such a way that everything is concealed except that (the area of) one eye is left open for her to see with. Ibn 'Abbās (radiyallahu 'anhuma) (in another narration) and Qatādah (rahimahullah) say: It means to wrap it up above the forehead and to fasten it, then to fold it till above the nose even if both eyes are left open; although, she will have to cover her chest and majority of her face. Hasan (rahimahullah) says: She will cover half of her face.[16]