Under the Pakistan Penal Code, specifically in the context of Islamic provisions incorporated into the law, ikrah is classified into two distinct categories: ikrah-i-tam (complete duress) and ikrah-i-naqis (incomplete duress). These categories determine the legal impact of the duress on the criminal liability of the accused.

Qatl-i-amd is defined under the Pakistan Penal Code as the intentional killing of a person. It encompasses cases where the offender acts with the specific intent to cause death or with the knowledge that the act is so imminently dangerous that it will, in all probability, result in death. This is the most serious category of homicide under Islamic criminal law as incorporated into the PPC.

A corrosive substance is defined as a chemical agent that causes irreversible damage or destruction to another surface or material, particularly metals, through a chemical reaction. This process involves the gradual wearing away or degradation of the material's structural integrity. While the term 'fretting' is sometimes used in mechanical contexts, the primary legal and scientific definition focuses on the chemical destruction of the material.

Section 302 of the Pakistan Penal Code is the primary provision that defines the punishment for qatl-i-amd (intentional murder). It provides for various sentencing options, including death or life imprisonment, depending on the circumstances of the crime and whether the case is proven to be liable to qisas or tazir. This section is fundamental to the enforcement of criminal justice regarding homicide in Pakistan.

Qatl shibah-i-amd, or quasi-intentional homicide, involves an act where there is an intent to cause harm but not necessarily death. Under the Pakistan Penal Code, the court may impose a Tazir punishment, which can extend up to 25 years of imprisonment, reflecting the gravity of the offense while acknowledging the lack of specific intent to kill.

Qatl-i-khata, meaning 'unintentional homicide,' describes a death caused without premeditation or intent to harm. The individual acted mistakenly, either in their actions or understanding of the situation. This classification is crucial in Islamic criminal law as it distinguishes between accidental death and intentional murder, significantly impacting the nature of the punishment and the requirement for diyat.

Section 324 of the Pakistan Penal Code deals with the attempt to commit Qatl-i-Amd (intentional murder). It prescribes the punishment for anyone who does any act with such intention or knowledge, and under such circumstances, that if they by that act caused death, they would be guilty of Qatl-i-Amd. This section is vital for prosecuting individuals who intended to kill but failed to complete the act.

Section 337 of the Pakistan Penal Code defines Shajjah, which refers to injuries to the head or face that do not expose the bone. The statute classifies Shajjah into six distinct categories based on the severity and nature of the wound, ranging from Shajjah-i-Khafifah to Shajjah-i-Hashimah, each carrying specific legal consequences under the Qisas and Diyat laws.

Section 337-Y of the Pakistan Penal Code stipulates that the court shall determine the amount of Daman. The court considers the nature of the injury, the loss caused, and the financial status of the offender to ensure the compensation is equitable and legally sound. Note: The source incorrectly referred to the Police Act; the correct statute is the PPC.

Under the Pakistan Penal Code, 'Hurt' is classified into five distinct categories: Itlaf-i-udw, Itlaf-i-salahiyyat-i-udw, Shajjah, Jurh, and other types of hurt not amounting to these specific categories. These classifications are essential for determining the appropriate punishment, which may include Qisas (retribution) or Diyat (financial compensation), depending on the nature and severity of the injury inflicted upon the victim.