موجبات الغسل
Abu Hurayrah (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "If he sits between her four limbs and exerts himself (by having sexual intercourse with her), the ritual bath becomes obligatory." Another version adds: "even if he does not ejaculate."
عن أبي هريرة -رضي الله عنه- أَنَّ النَّبِيَّ - صلى الله عليه وسلم - قَالَ: ((إِذَا جَلَسَ بين شُعَبِهَا الأَربع، ثم جَهَدَهَا، فَقَد وَجَبَ الغُسْلُ)) . وفي لفظ ((وإن لم يُنْزِل)).
شرح الحديث :
If a man sits between a woman's four limbs, i.e. her arms and legs, and he inserts his male organ into her vagina, then it is obligatory on both of them to take a ritual bath in order to remove the major ritual impurity even if no semen is discharged. Penetration on its own necessitates ritual bath.