Jannah is a reward for the one who shows patience at the passing away of their loved one

The Messenger of Allah ﷺ said: “Allah ﷻ says: ‘My believing servant has no other reward with Me except Jannah, when I take from the people of this world his cherished one, and he then seeks reward ˹from Me˺ for it.’”

أَنَّ رَسُولَ اللَّهِ ﷺ قَال «يَقُولُ اللَّهُ تَعَالَى: مَا لِعَبْدِي الْمُؤْمِنِ عِنْدِي جَزَاءٌ إِذَا قَبَضْتُ صَفِيَّهُ مِنْ أَهْلِ الدُّنْيَا ثُمَّ احْتَسَبَهُ إِلاَّ الْجَنَّةُ».

Messenger of Allah ﷺ said, "Allah says, 'I have nothing to give but Paradise as a reward to my believer slave, who, if I cause his dear friend (or relative) to die, remains patient (and hopes for Allah's Reward). (Using translation from Bukhārī 6424)

أَنَّ رَسُولَ اللهِ ﷺ قَالَ يَقُولُ اللهُ ﷻ مَا لِعَبْدِي الْمُؤْمِنِ عِنْدِي جَزَاءٌ إِذَا قَبَضْتُ صَفِيَّهُ مِنْ أَهْلِ الدُّنْيَا ثُمَّ احْتَسَبَهُ إِلَّا الْجَنَّةُ