Is it permissible to call a Christian person to Islam

Source: Al-Fatwa Ladjnah ad Dâ'imah vol 4 / 62

Question:

Is it permissible to call a Christian person to Islam, and he read a translation of the Quran, although he is not clean?

Answer:

Calling to Allah is to go the way of the Prophets.

Allah Most High says (in importance):

"Say [Muhammad]: 'This is my way, I call you on (to worship) Allah - I and those who follow me. Great is Allah in His glory, [far from] the associates they sat by his side and that I take away from it! " '

(Yusuf 12/108)

To give him a translation of the honorable Quran is a way to call to Allah, so it is allowed. And success lies with Allah and we ask Allah to send peace and blessings upon our Prophet Muhammad, his family and companions.