It is obligatory to do ghusl following intercourse even if no ejaculation takes place

No File Exists
Check below answers in case you are looking for other related questions:
If maniy (semen) is emitted whilst one is awake because of illness, ghusl is not required
What is the janaabah that makes ghusl obligatory?

No File Exists
Related Answers:
Differences between semen (maniy) and urethral fluid (madhiy)
He used not to do ghusl for janaabah out of ignorance; should he make up the prayers?
Is it permitted to bathe naked?
If maniy (semen) is emitted whilst one is awake because of illness, ghusl is not required
What is the janaabah that makes ghusl obligatory?

Recommended answers for you:
Buying lottery tickets
Reading Soorat al-Mulk protects one from the torment of the grave
Times when it is forbidden to pray
What are the rights of the husband and what are the rights of the wife?
The reason why it is forbidden to have intercourse with one's wife when she is menstruating or bleeding following childbirth