The conditions of accepting the shahadah are: knowledge, certainty, acceptance, submission, truthfulness, sincerity, and love.

The conditions of La ilaha illa-Allah are: knowledge, certainty, submission, following, truthfulness, sincerity and love.

One aspect of the Mercy of Allah to His slaves is that He sent the messengers and revealed the Books and laws to organize their lives according to the ways of wisdom, far removed from hardship and difficulty.