Question Summary:
The act of masturbation is a sin and is prohibited in Islam

Question Detail:

If a person was to masturbate, he reached an orgasm but somehow he did not ejaculate then will thusly become farther on him?

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
 
The act of masturbation is a sin and is prohibited in Islam. The person should make Tawbah and Istighfar for masturbating.
Your query is not clear. We do not know what you mean by “will thusly become farther on him” please clarify.
 
 
And Allah Ta’āla Knows Best
Saleem Khan
Student Darul Iftaa
Bradford, UK
Checked and Approved by,
Mufti Ebrahim Desai.
www.daruliftaa.net