ENOfficial
He said that God’s messenger said to an invalid whom he visited, "Cheer up, for God most high says, ‘It is my fire to which I give power over my believing servant in the world to be his portion of hell on the day of resurrection.” Ahmad, Ibn Majah and Baihaqi, in Shu'ab al- iman, transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: إِنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَادَ مَرِيضًا فَقَالَ: " أَبْشِرْ فَإِنَّ اللَّهَ تَعَالَى يَقُولُ: هِيَ نَارِي أُسَلِّطُهَا عَلَى عَبْدِي الْمُؤْمِنِ فِي الدُّنْيَا لِتَكَوُنَ حَظَّهُ مِنَ النَّارِ يَوْمَ الْقِيَامَةِ ". رَوَاهُ أَحْمَدُ وَابْنُ مَاجَهْ والْبَيْهَقِيُّ فِي شُعَبِ الْإِيمَان
sunnah.com