The 2nd Kalma, also known as the Shahada, is a fundamental declaration of faith in Islam. It is recited by Muslims as an affirmation of their belief in the oneness of Allah (God) and the prophethood of Muhammad, peace be upon him. The 2nd Kalma is as follows:

"Ashhadu alla ilaha illallah, wa ashhadu anna Muhammadur rasulullah."

This statement can be translated to English as:

"I bear witness that there is no god but Allah, and I bear witness that Muhammad is the messenger of Allah."

Reciting the 2nd Kalma is a significant and essential aspect of the Islamic faith, as it signifies one's belief in the central tenets of Islam. It is often one of the first things that new Muslims (reverts) or those embracing Islam declare as a sign of their faith. The 2nd Kalma emphasizes the monotheistic nature of Islam, acknowledging the belief in the one and only God, Allah, and recognizing the prophethood of Muhammad as His final messenger.