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Abu Huraira reported God's messenger as saying, "Only he who is miserable will enter hell." He was asked to whom that referred and replied, "He who has not done an act of obedience for God's sake, or left an act of disobedience undone." Ibn Majah transmitted it
Source: sunnah.com
Other translations
Arabic
وَعَنْ أَبِي هُرَيْرَةَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا يَدْخُلُ النَّارَ إِلَّا شَقِيٌّ» . قِيلَ: يَا رَسُولَ اللَّهِ وَمَنِ الشَّقِيُّ؟ قَالَ: «مَنْ لَمْ يَعْمَلْ لِلَّهِ بِطَاعَةٍ وَلم يتركْ لَهُ مَعْصِيّة» . رَوَاهُ ابْنُ مَاجَهْ
sunnah.com