question #1 Sahih al-Bukhari 291, Book 5, Hadith 43 : What are the conditions that make a bath obligatory in Islam after marital relations?

as the following Hadith 290.Narrated Abu Huraira:The Prophet (ﷺ) said, “When a man sits in between the four parts of a woman and did the sexual
intercourse with her, bath becomes compulsory.”