If one wants to call somebody to Islam, how should he start?
Praise be to Allaah.
Calling to Allah must be accompanied by wisdom, peaceful advice and flexibility. Callers to Allah are to focus on the most important issues and move to what follows. The Prophet, peace be upon him, said to Mu’ath ibn Jabal when he sent him to Yemen, “First, call them to testify that there is no God but Allah, and Muhammad is His Messenger. If they respond, ask them to perform five daily prayers. If they respond, tell them that Allah has imposed Zakat (Alms taxes) which is to be taken from the rich and distributed among the poor.
One should also wait for the best opportunity by choosing the suitable time and place for propagation.