عَنْ أَبِي هُرَيْرَةَ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «إِذا جلس بَيْنَ شُعَبِهَا الْأَرْبَعِ ثُمَّ جَهَدَهَا فَقَدْ وَجَبَ الْغسْل وَإِن لم ينزل»

Abu Sa'id reported God's messenger as saying, "Water is necessary only when there is an emission.” Muslim transmitted it. The shaikh and imam Muhyi as-Sunna said that this is abrogated.