Allah said,

﴿وَالَّذِينَ ءَامَنُواْ وَعَمِلُواْ الصَّـلِحَـتِ سَنُدْخِلُهُمْ جَنَّـتٍ تَجْرِى مِن تَحْتِهَا الاٌّنْهَـرُ خَـلِدِينَ فِيهَآ أَبَداً﴾

(But those who believe and do deeds of righteousness, We shall admit them to Gardens under which rivers flow (Paradise), abiding therein forever.) describing the destination of the happy ones in the gardens of Eden, beneath which rivers flow in all of its areas, spaces and corners, wherever they desire and wish. They will reside in it for eternity, and they will not be transferred or removed from it, nor would they want to move from it. Allah said,

﴿لَّهُمْ فِيهَآ أَزْوَجٌ مُّطَهَّرَةٌ﴾

(Therein they shall have Azwajun Mutahharatun (purified mates),) free of menstruation, postnatal bleeding, filth, bad manners and shortcomings. Ibn `Abbas said that the Ayah means, "They are purified of filth and foul things.'' Similar was said by `Ata', Al-Hasan, Ad-Dahhak, An-Nakha`i, Abu Salih, `Atiyah, and As-Suddi. Mujahid said that they are, free of urine, menstruation, spit, mucous and pregnancies.'' Allah's statement,

﴿وَنُدْخِلُهُمْ ظِـلاًّ ظَلِيلاً﴾

(And We shall admit them to shades, wide and ever deepening (Paradise).) means, wide, extensive, pure and elegant shade. Ibn Jarir recorded that Abu Hurayrah said that the Prophet said,

«إِنَّ فِي الْجَنَّةِ لَشَجَرَةً يَسِيرُ الرَّاكِبُ فِي ظِلِّهَا مِائَةَ عَامٍ لَا يَقْطَعُهَا: شَجَرَةَ الْخُلْد»

(There is a tree in Paradise, that if a rider travels under its shade for a hundred years, he will not cross it. It is the Tree of Everlasting Life.)

﴿إِنَّ اللَّهَ يَأْمُرُكُمْ أَن تُؤدُّواْ الاحَمَـنَـتِ إِلَى أَهْلِهَا وَإِذَا حَكَمْتُمْ بَيْنَ النَّاسِ أَن تَحْكُمُواْ بِالْعَدْلِ إِنَّ اللَّهَ نِعِمَّا يَعِظُكُمْ بِهِ إِنَّ اللَّهَ كَانَ سَمِيعاً بَصِيراً ﴾

(58. Verily, Allah commands that you should render back the trusts to those, to whom they are due; and that when you judge between men, you judge with justice. Verily, how excellent is the teaching which He (Allah) gives you! Truly, Allah is Ever All-Hearer, All-Seer.)