According to search-discovered classical Islamic scholarship, the concept of rejoicing is nuanced, distinguishing between 'Surur' (سرور), a deep, praiseworthy inner delight of the soul, and 'Farah' (فرح), an external excitement that can be either permissible or blameworthy. The Quran, across more than 22 verses, presents a complete framework for this emotion. Tafsir Ibn Kathir on verses like 3:170 highlights the ultimate 'Surur' of the martyrs, who are alive and rejoicing in Allah's immediate bounty. In contrast, scholars like Al-Qurtubi explain that verses such as 9:50 and 13:26 condemn rejoicing in worldly arrogance or at the misfortune of others. The synthesis of these verses reveals that true, lasting joy for a believer is tied to the spiritual heart's connection with Allah, His grace, His victory, and the ultimate promise of Paradise, where they will be met with 'radiance and joy' (Nadrah wa Surur) as mentioned in Surah Al-Insan (76:11). This makes the pursuit of joy an act of directing the heart towards Allah, away from the fleeting distractions of the material world.