<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 in Islam is a mandatory religious duty for Muslims to perform once in their lifetime if able. Answer: [/INST]The Hajj pilgrimage is one of the Five Pillars of Islam and is considered a mandatory religious duty for Muslims to perform at least once in their lifetime if able.</s>