At-Taubah - 9:6

وَإِنْ أَحَدٌ مِّنَ الْمُشْرِكِينَ اسْتَجَارَكَ فَأَجِرْهُ حَتَّى يَسْمَعَ كَلاَمَ اللّهِ ثُمَّ أَبْلِغْهُ مَأْمَنَهُ ذَلِكَ بِأَنَّهُمْ قَوْمٌ لاَّ يَعْلَمُونَ
[9:6]
And if one of the idolaters seek protection from you, grant him protection till he hears the word of Allah, then make him attain his place of safety; this is because they are a people who do not know.
If one amongst the Pagans ask thee for asylum, grant it to him, so that he may hear the word of Allah; and then escort him to where he can be secure. That is because they are men without knowledge.
And if anyone of the idolaters seeketh thy protection (O Muhammad), then protect him so that he may hear the Word of Allah, and afterward convey him to his place of safety. That is because they are a folk who know not.