The Messenger of Allah said: "Allah has permitted my Ummah what occurs in their mines, as long as it is not spoken or acted upon."  

قَالَ رَسُولُ اللَّهِ ﷺ تَجَاوَزَ اللَّهُ لأُمَّتِي مَا حَدَّثَتْ بِهِ أَنْفُسَهَا مَا لَمْ تَكَلَّمْ بِهِ أَوْ تَعْمَلْ بِهِ