ما هي الأدلة من القرآن والسنة التي تثبت أن الله شديد العقاب؟

The aim of this answer is to guide friends to advise one another, and to point out that the majority of scholars consider singing to be forbidden, based on evidence from the Qur’an and Sunnah. The answer divides verses and hadiths about the severity of Allah's punishment into two categories: those related to singing, and those related to the severity of Allah's punishment in general. It presents hadiths about cursing, swallowing by the earth, metamorphosis, and being pelted with stones for those who listen to singing, and others that describe the torment of Hellfire, its fuel, and the state of its inhabitants, such as the sweat of the people of Hell, sandals of fire, and the lightest punishment among the people of Hell. It also emphasizes that trust in Allah's mercy must be coupled with righteous deeds and avoidance of sins.