"My Lord has forbidden shameful deeds, open or secret"

قُلۡ إِنَّمَا حَرَّمَ رَبِّىَ ٱلۡفَوَٲحِشَ مَا ظَهَرَ مِنۡہَا وَمَا بَطَنَ وَٱلۡإِثۡمَ وَٱلۡبَغۡىَ بِغَيۡرِ ٱلۡحَقِّ وَأَن تُشۡرِكُواْ بِٱللَّهِ مَا لَمۡ يُنَزِّلۡ بِهِۦ سُلۡطَـٰنً۬ا وَأَن تَقُولُواْ عَلَى ٱللَّهِ مَا لَا تَعۡلَمُونَ

"Say: The things that my Lord has indeed forbidden are: shameful deeds, whether open or secret; sins and trespasses against truth or reason (i.e. oppression); assigning of partners to Allah, for which He has given no authority; and saying things about Allah of which you have no knowledge."

(Qur'an 7:33)