Messenger of Allah ﷺ said," None of you should long for death because of a calamity that had befallen him, and if he cannot, but long for death, then he should say, 'O Allah! Let me live as long as life is better for me, and take my life if death is better for me.' " (Using translation from Bukhārī 6351)  

قَالَ رَسُولُ اللهِ ﷺ لَا يَتَمَنَّى أَحَدُكُمُ الْمَوْتَ لِضُرٍّ نَزَلَ بِهِ فَإِنْ كَانَ لَا بُدَّ مُتَمَنِّيًا الْمَوْتَ فَلْيَقُلِ اللهُمَّ أَحْيِنِي مَا كَانَتِ الْحَيَاةُ خَيْرًا لِي وَتَوَفَّنِي إِذَا كَانَتِ الْوَفَاةُ خَيْرًا لِي  

I fell sick and the Messenger of Allah ﷺ passed by me when I was saying O Allah, if my time has come then grant me relief; if it has not yet come then raise me in status; and if this is a trial then grant me patience. The Messenger of Allah ﷺ said: “What did you say?” He repeated to him what he had said, and he nudged him with his foot and said: ʿO Allah, grant him well beingʿ or “O Allah, heal him.” - Shuʿbah was not certain. He [‘Ali] said: And I never suffered that sickness again after that. (Using translation from Aḥmad 841)   

مَرَّ عَلَيَّ رَسُولُ اللهِ ﷺ وَأَنَا أَقُولُ اللهُمَّ إِنْ كَانَ أَجَلِي قَدْ حَضَرَ فَأَرِحْنِي وَإِنْ كَانَ مُتَأَخِّرًا فَارْفَعْنِي وَإِنْ كَانَ بَلَاءً فَصَبِّرْنِي فَضَرَبَنِي بِرِجْلِهِ وَقَالَ «اللهُمَّ اشْفِهِ اللهُمَّ عَافِهِ» فَمَا اشْتَكَيْتُ وَجَعِي ذَلِكَ بَعْدُ