Assalaamu alaykum. I was just wondering; what does 35: 35 mean in the Quran because the words fatigue and weariness mean the same thing. May Allaah reward you.

All perfect praise be to Allah, The Lord of the worlds. I testify that there is none worthy of worship except Allah and that Muhammad is His slave and Messenger.

Allah says (what means): {He Who has settled us in the home of duration out of His bounty. There touches us not in it any fatigue, and there touches us not in it weariness [of mind].} [Quran 35:35]

The meaning of the verse as stated in Tafseer As-Sa’di and other works is:

"{He who has settled us} means: Who has made us to settle in a stable and settled place, and not a settlement of passing through and admonition. {The home of duration} means: the home where the residence is permanent, and the home that people wish to settle in because of its abundant bounties, consecutive happiness, and the inexistence of distress, and it is He Who made us to settle {out of His bounty} and favor on us, and not because of our actions. Were it not for His favor, we would not have reached the position that we have reached.

Fatigue (Arabic: Nasab) means the tiredness of the body, and weariness (Arabic: Lughoob) means the tiredness of the mind. It was also said that Lughoob is pain." 

Tafseer As-Sa’di reads: "There touches us not in it any fatigue, and there touches us not in it weariness [of mind].}, meaning no tiredness in our bodies nor in our heart and strength, and not in our abundant enjoyment.

This proves that Allah will make their bodies in a perfect creation and will prepare for them permanent means of rest; to be in this state in a way that neither fatigue nor weariness will touch them, nor grief, nor distress.

This also proves that they do not sleep in Paradise, because the benefit of sleep is to get rid of tiredness and to rest, while the people of Paradise are not so. Also, because sleep is the smaller death, and the people of Paradise do not die. May Allah make us among the people of Paradise out of His Bounty and Favor.”

Allah knows best.