According to one popular tradition, the pesantren education system originated from traditional Javanese pondokan; dormitories; ashram for Hindu or viharas for Buddhists to learn religious philosophies, martial arts and meditation. Institutions much like them are found across the Islamic world and are called pondok in Malaysia and Southern Thailand and madrasa Islamia (Islamic madrasa) in India and Pakistan and much of the Arabic speaking world. Pesantren aim to deepen knowledge of the Koran, particularly through the study of Arabic, traditions of exegesis, the Sayings of the Prophet, law and logic.