Anas ibn Malik reported: The Messenger of Allah, peace and blessings be upon him, said, “Allah said: If I afflict My servant in his two dear eyes and he remains patient, he will be compensated for them with Paradise.”
Source: Ṣaḥīḥ al-Bukhārī 5653
Grade: Sahih (authentic) according to Al-Bukhari
عَنْ أَنَسِ بْنِ مَالِكٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِنَّ اللَّهَ قَالَ إِذَا ابْتَلَيْتُ عَبْدِي بِحَبِيبَتَيْهِ فَصَبَرَ عَوَّضْتُهُ مِنْهُمَا الْجَنَّةَ
5653 صحيح البخاري كتاب المرضى باب فضل من ذهب بصره