According to Hadith, anyone who dies before the age of 60 will have their sins forgiven and be admitted into Paradise. This is based on the following two Hadith found in Sahih al-Bukahri.
In the first Hadith, the prophet is asking forgiveness for all those who die before the age of 60 years of age. It is worth noting that according to this Hadith, it is not limited to a specific individual, or the companions, or even a certain group but is stated to apply to “any person” who dies before they turn sixty.
حَدَّثَنِي عَبْدُ السَّلاَمِ بْنُ مُطَهَّرٍ، حَدَّثَنَا عُمَرُ بْنُ عَلِيٍّ، عَنْ مَعْنِ بْنِ مُحَمَّدٍ الْغِفَارِيِّ، عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ الْمَقْبُرِيِّ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم فَقَالَ “ أَعْذَرَ اللَّهُ إِلَى امْرِئٍ أَخَّرَ أَجَلَهُ حَتَّى بَلَّغَهُ سِتِّينَ سَنَةً ”. تَابَعَهُ أَبُو حَازِمٍ وَابْنُ عَجْلاَنَ عَنِ الْمَقْبُرِيِّ.
Narrated Abu Huraira: The Prophet (ﷺ) said, “Allah will not accept the excuse of any person whose instant of death is delayed till he is sixty years of age.”
Sahih al-Bukhari 6419 https://sunnah.com/bukhari:6419
The above translation provided by Sunnah.com is very deceptive to what is actually stated in the Arabic. A more accurate translation would be.
Narrated Abu Huraira: The Prophet (ﷺ) said, “May Allah excuse a person whose death was postponed until he reaches sixty years of age.”
Here is the word-by-word breakdown of the above Hadith attributed to the prophet.
The second Hadith states that the prophet has been granted exclusive authority to intercede on anyone’s behalf that he chooses, and God will grant him this intercession. Therefore, anyone the prophet wishes will be taken out of Hell and admitted into Paradise.