"When the two circumcised parts meet, then bath is obligatory. The Messenger of Allah and I did that, and we bathed."  

عَنْ عَائِشَةَ زَوْجِ النَّبِيِّ ﷺ قَالَتْ إِذَا الْتَقَى الْخِتَانَانِ فَقَدْ وَجَبَ الْغُسْلُ فَعَلْتُهُ أَنَا وَرَسُولُ اللَّهِ ﷺ فَاغْتَسَلْنَا  

"That was a concession that was granted in the early days of Islam, then we were commanded to have a bathe after that."  

إِنَّمَا كَانَتْ رُخْصَةً فِي أَوَّلِ الإِسْلاَمِ ثُمَّ أُمِرْنَا بِالْغُسْلِ بَعْدُ  

The Messenger of Allah said: "When a man sits between the four parts (arms and legs of his wife) and has intercourse, then bath is obligatory."  

عَنْ رَسُولِ اللَّهِ ﷺ قَالَ إِذَا جَلَسَ الرَّجُلُ بَيْنَ شُعَبِهَا الأَرْبَعِ ثُمَّ جَهَدَهَا فَقَدْ وَجَبَ الْغُسْلُ  

"The Messenger of Allah said: 'When the two circumcised parts meet, and (the tip of the penis) disappears, then bath is obligatory.'"  

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا الْتَقَى الْخِتَانَانِ وَتَوَارَتِ الْحَشَفَةُ فَقَدْ وَجَبَ الْغُسْلُ