When reciting the Shahada, is the name of the Prophet to be pronounced as Muhammadun, Muhammadan or just Muhammad?

Prophet MuhammadShahada
When reciting the Shahada, is the name of the Prophet to be pronounced as Muhammadun, Muhammadan or just Muhammad?
Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 6 years ago

In Shahadah , we recite ASHHADU ALLA ILAAHA ILLALLAH WAHDAHU LAA SHAREEKA LAH, WA ASHHADU ANNA MUHAMMADAN ABDUHO WA RASOOLOH.