Joining: the shahada.
Spoken once with sincere intent: there is no god but God, and Muhammad is His messenger. That is the whole ceremony.
Conversion to Islam requires one sentence, said sincerely, ideally before witnesses: there is no god but God, and Muhammad is His Messenger. There is no clergy to approve it, no catechumenate, and no ceremony of initiation beyond the statement and a recommended ritual bath. That radical simplicity is one plausible explanation for the religion's spread, and it means the boundary of the community is verbal rather than institutional — the same sentence a Muslim child hears whispered at birth.
The same ground, other faiths
claims that share this one's ideasSign in to open the first thread. Everything here is attributed.
