Use a reported speech to report word contrary to Islam
In Islam if someone wants to report word contrary to Islam, he must use the reported speech by saying for example the author said or someone said so-and-so. Similarly in writing, he must write the author said before reporting what is contrary to Islam. Similarly, the reported speech is used before playing an audio or a video in which it is mentioned things contrary to Islam and before displaying writings contrary to Islam on a screen or before printing them, by saying for example I show what the author said...
The proof of the reported speech is mentioned in the Qur'ân. Allâh said:
﴿ وَقَالَتِ الْيَهُودُ عُزَيْرٌ ابْنُ اللَّهِ وَقَالَتِ النَّصَارَى الْمَسِيحُ ابْنُ اللَّهِ ﴾
Which means: « The Jews said `uzayr son of God and the Christians said Messiah is son of God. » [Surat At-Tawbah, 'âyah 30] and in many other verses.
The Prophet MuHammad Salla lLâhu `alayhi wa sallam said:
« أَكْثَرُ خَطَايَا ابْنِ آدَمَ مِنْ لِسَانِهِ »
which means: « Most of the sins of the sons of Adam are from his tongue. » [Related by at-Tabaraniyy]. Among these are great sins and blasphemy.
See: Protect his Faith: Avoid Apostasy, Blasphemy, Disbelief