Is it possible to get salvation without the intercession of Sayedna Muhammad?

In the article, the author references a Muslim scholar, Shaykh Gibril F. Haddad, who confirms that without the intercession of Muhammad, one cannot attain salvation. This aligns with the core Islamic belief that Muhammad is essential for salvation, as one must testify to his prophethood to be considered a true Muslim. The author argues that this necessity places Muhammad in a position akin to a deity, as he is viewed as the mediator between believers and Allah. Furthermore, the Quran explicitly states that the only accepted religion is Islam, emphasizing the importance of Muhammad's role in salvation. This understanding raises questions about the nature of salvation in Islam compared to Christianity, where Jesus is seen as the sole mediator for salvation, independent of any other figure.