Quran 26:48

Surah Ash-Shura, Verse 48:
فَإِنْ أَعْرَضُوا فَمَا أَرْسَلْنَاكَ عَلَيْهِمْ حَفِيظًا إِنْ عَلَيْكَ إِلَّا الْبَلَاغُ وَإِنَّا إِذَا أَذَقْنَا الْإِنسَانَ مِنَّا رَحْمَةً فَرِحَ بِهَا وَإِن تُصِبْهُمْ سَيِّئَةٌ بِمَا قَدَّمَتْ أَيْدِيهِمْ فَإِنَّ الْإِنسَانَ كَفُورٌ

But if they turn away, (O Muhammad صلى الله عليه و سلم)from the Islamic Monotheism,which we have brought to them).We have not sent you (O Muhammad صلى الله عليه و سلم) as a Hafiz(watcher, protector) over them (I.e. to take care of their deeds and to recompense them).Your duty is to convey (the message). And verily when We cause man to taste of mercy from Us, he rejoices thereat; but when some ill befalls them because of the deeds which their hands have sent forth, then verily,man ( becomes) ingrate!
Reference: Sahih Bukhari (English),Volume 06,60. Prophetic Commentary,Hadith 283:-

Narrated Anas bin Malik:

A man said, "O Allah's Prophet! Will Allah gather the non-believers on their faces on the Day of Resurrection?" He said, "Will not the One Who made him walk on his feet in this world, be able to make him walk on his face on the Day of Resurrection?" (Qatada, a subnarrator, said: Yes, By the Power of Our Lord!) 1- Some companions were sitting with the Messenger of Allah (salAllahu `alaihi wa sallam) and they heard the sound of something falling. The Prophet (salAllahu `alaihi wa sallam) said, "Do you know what that was?" We said, "Allah and His Messenger know best". He said, "That was a stone that was thrown into Hell seventy years ago and it was falling through Hell until now". (Muslim)*Here we should remember that 70 years of Allah are equivalent to approximately 70,000 of our calendar.2- Those who will enter Hell will be many, and one of them will be so huge that his molars will be as big as Mount Uhud, and the distance between his shoulders will be equivalent to three days walking. Nevertheless, Hell will accommodate the huge number of evildoers who have existed throughout history, in spite of their huge size, and there will still be room for more, as Allah (subhanu wa ta'ala) says in the Quran: Surah Qaf, Verse 30:
يَوْمَ نَقُولُ لِجَهَنَّمَ هَلِ امْتَلَأْتِ وَتَقُولُ هَلْ مِن مَّزِيدٍ

On the day that We will say to hell: Are you filled up? And it will say: Are there any more?