Islamic scholars across the major schools of jurisprudence (Hanafi, Maliki, Shafi'i, Hanbali) treat palmistry as a form of fortune-telling (kahanah or 'irafah), which is prohibited in Islamic law. The prohibition stems from the Quran's teaching that knowledge of the unseen (al-ghayb) belongs to Allah alone, and from multiple hadiths warning against consulting fortune-tellers.
The reasoning is theological as well as legal: claiming to know the future from a palm implies that something other than Allah determines or reveals future events, which conflicts with Islamic monotheism (tawhid) and the concept of divine knowledge.
Some scholars distinguish between palmistry practiced as cultural tradition or entertainment (without genuine belief in its predictions) and palmistry treated as a genuine source of knowledge about the future. The former may be treated with less severity by some scholars, though most advise against it entirely to avoid confusion and imitation of prohibited practices.
