Farḍ (Arabic: فرض) or farīḍah (فريضة) or fardh in Islam is a religious duty commanded by God. The word is also used in Turkish, Persian, Pashto, Urdu, Hindi, Bangla (spelled farz or faraz), and Malay (spelled fardu or fardhu) in the same meaning. Muslims who obey such commands or duties are said to receive hasanat (حسنة), ajr (أجر) or thawab (ثواب) for each good deed.
Fard or its synonym wājib (واجب) is one of the five types of ahkam (أحكام) into which fiqh categorizes acts of every Muslim. The Hanafi fiqh, however, does not consider both terms to be synonymous, and makes a distinction between wajib and fard, the latter being obligatory and the former slightly lesser degree than being obligatory.
In the principles of Islamic jurisprudence (Arabic: أصول الفقه, romanized: uṣūl al-fiqh), rulings governing actions fall into categories known as "the five rulings" (الأحكام الخمسة, al-aḥkām al-khamsa).
It is a sin or a crime to perform a forbidden action or not to perform a mandatory action. Avoiding reprehensible acts and performing recommended acts is held to be subject of reward in the afterlife, while allowed actions entail no judgement from God.
Islamic jurists disagree on whether the term halal covers the first two, three, or four of these categories.
The fiqh distinguishes two sorts of duties: