Which of the following is NOT one of the 5 Pillars of Islam?

The five pillars of Islam are fundamental acts of worship that shape a Muslim's faith and practice. These pillars include:

1. Shahada: The declaration of faith, affirming the oneness of God and the prophethood of Muhammad.

2. Salat: The performance of the five daily prayers required of Muslims.

3. Zakat: The giving of alms or charity to support those in need, calculated as a specific percentage of savings.

4. Sawm: The fasting during the month of Ramadan.

5. Hajj: The pilgrimage to Mecca that Muslims are required to undertake at least once in their lifetime if they are physically and financially able.

Nikah, which refers to the Islamic marriage contract, is an important aspect of Islamic life and law but does not fall under the five pillars of Islam. Nikah focuses on family life and social responsibilities rather than the core tenets of faith and worship that define a Muslim's relationship with God. Hence, it is not considered one of the five pillars. The correct identification of Nikah as not part of this core framework is crucial for understanding the foundational practices in Islam.