What is the ruling on inviting non-Muslims to Islam, what are the best ways to do so, what if they insist on disbelief, and what is the ruling on seeking help from specialists and websites in this field?

a. Striving to invite non-Muslims [to Islam] in an appropriate and serious manner is a commendable act for which one will be rewarded.

b. There is no sin upon the caller [to Islam] if the one being called does not accept guidance, because guidance is in the hand of Allah alone. The Quran mentions that some disbelievers increase in aversion and obstinacy.

c. The Dar Al-Islam website is considered a reliable and beneficial resource for inviting non-Muslims in various languages, and it is managed by the Rabwah Expatriate Office.

d. If communication with specialists is not possible, the caller should continue their efforts through direct dawah, or by referring those being called to reliable websites, or by distributing introductory materials about Islam.