The Quran

قُل مَن حَرَّمَ زينَةَ اللَّهِ الَّتي أَخرَجَ لِعِبادِهِ وَالطَّيِّباتِ مِنَ الرِّزقِ ۚ قُل هِيَ لِلَّذينَ آمَنوا فِي الحَياةِ الدُّنيا خالِصَةً يَومَ القِيامَةِ ۗ كَذٰلِكَ نُفَصِّلُ الآياتِ لِقَومٍ يَعلَمونَ

Muhammad Asad

Say: "Who is there to forbid the beauty which God has brought forth for His creatures, and the good things from among the means of sustenance?" Say: "They are [lawful] in the life of this world unto all who have attained to faith - to be theirs alone on Resurrection Day."¹ Thus clearly do We spell out these messages unto people of [innate] knowledge!

By declaring that all good and beautiful things of life - i.e., those which are not expressly prohibited - are lawful to the believers, the Qur'an condemns, by implication, all forms of life-denying asceticism, world-renunciation and self-mortification. While, in the life of this world, those good things are shared by believers and unbelievers alike, they will be denied to the latter in the hereafter (cf. verses 50-51 of this surah).