Masturbation is haram?

Salam, not Haram but Makruuh (disliked)

Ibn Aqil said : and many of our scholars have ruled that masturbation is makruh (disliked), and never explicitly said he that it was haram.

If a man is torn between continued desire or releasing it, and if this man does not have a wife, and he fears that he will suffer because of this (someone like a prisoner, or a traveler, or a pauper), then it is permissible for him to masturbate, and Ahmad (ibn Hanbal) is explicit on this.

And the right (correct) for me is that it is illegal, because the Prophet (Peace be upon him) guided one who had a desire, and could not marry, to the fast

I'm going to tell you what I said in another Similar Closed Question.

Assalamalaikoma rahmatullah e wabarakatoh, Dear brother,

Masturbation, inciting ejaculation by using one's hand or any other object (For Man or Women) is unlawful as is proven in the Quran. It's harms are great.

Allah describes the people of faith: “And those who guard their chastity except with their wives or those whom their right hand possess" – for them is no blame.

There many sayings WHICH ARE FALSELY ATTRIBUTED to the Sahaba’s regarding their leniency towards Masturbation. MASTURBATION IS HARAAM.

                                          I hope it helped.