Mishkat al-Masabih 4599
Abu Huraira reported God’s messenger as saying:
“If anyone resorts to a kahin and believes him m what he says, or has intercourse with his wife when she is menstruating, or has intercourse with his wife through her anus, he has nothing to do with what has been sent down to Muhammad.” 

Ahmad and Abu Dawud transmitted it.
وَعَنْ أَبِي هُرَيْرَةَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَنْ أَتَى كَاهِنًا فَصَدَّقَهُ بِمَا يَقُولُ أَوْ أَتَى امْرَأَتَهُ حَائِضًا أَو أَتَى امْرَأَته من دُبُرِهَا فَقَدْ بَرِئَ مِمَّا أُنْزِلَ عَلَى مُحَمَّدٍ» . رَوَاهُ أَحْمد وَأَبُو دَاوُد