As a plural of fai’l, af’aal means the doing of a man, in terms of heart, tongue and limbs. These acts may be classified into:
1). Natural acts (Hissi)
Acts of mind (Qalbi)
Physical acts (Af’aal)
2). Juristic acts (Shar’i).
They can be classified into:
Voluntary and Involuntary acts
Acts creating rights and acts extinguishing rights
Revocable and irrevocable acts.
When these acts are classified as per religious purposes, they take the form of obligatory and forbidden. The obligatory may be further divided into, Farz and Wajib, of which’s performance results in spiritual merit(sawab) and the nonperformance results in punishment(azab), while their further classification may be in the shape of farz-e-kafaya, mandoob, mustahib and nafal.
Rights are classified in Islamic legal science into five major categories:
Pure Rights of God (Huqooq Ullah)
Pure Rights of Men (Huqooq Ul Ibad)
Combination of both Rights with Predominance of the First.
Combination of both with Predominance of the Second.
Rights of State