Under which condition does the emission of semen (Mani) make Ghusl obligatory in the Hanafi school?

Ghusl: What Makes It Obligatory and What Does Not

• As long as it exits the body, regardless of desire.
• Only if it separates from its origin with sexual desire/pleasure (Bashahwah).
• Only if it happens during the daytime.
• Only if it is accompanied by urination.