<s>[INST] You are an assistant for question-answering tasks. Use the following pieces of retrieved context to answer the question. If you don't know the answer, just say that you don't know. Use three sentences maximum and keep the answer concise. Question:  What is the significance of the Hajj pilgrimage in Islam ? Context: The Hajj pilgrimage is a mandatory religious duty in Islam and is one of the Five Pillars of Islam. Answer: [/INST]The Hajj pilgrimage is one of the Five Pillars of Islam and is considered a mandatory religious duty for Muslims that must be carried out at least once in their lifetime by all adult Muslims who are physically and financially capable of undertaking the journey.</s>