* Al-Hor Al-Amili states in Wasa’el Al-Shia Book: Reported from Ahmad bin Mohammad bin Issa from his father that Imam Sadiq (Pbuh) was asked about masturbation. Imam (Pbuh) said: “It is a great sin that Allah prohibited in his Book. Who does that is as if he is mating with himself. If you knew what he does you wouldn’t eat with him.” The asker said: “O son of the Messenger of Allah, show me this in the book of Allah.” Imam (Pbuh): {the ones who sought what is behind that. Those are the transgressors} it is from {What is behind that}.” He asked: “Which is greater, it or fornication?” Imam (Pbuh) said: “It is a great sin. Some say that there are sins that are smaller than others. Yet all the sins are great in the sight of Allah because sinning is disobeying Allah and Allah doesn’t like the disobeying servants of His. Allah prohibited us from doing it because it is a demonic act and Allah said {Don’t worship Satan for Satan is an enemy of you. So regard him as your enemy. He only leads his party to be the companions of blazing fire}[1]
* Al-Sheikh Al-Kulaini states in Al-Kafi Book: Reported from Talha bin Zaid from Imam Abou Abdellah (Pbuh) that he said: “Ameer Elmo’mineen hit the hand of a man masturbating till it became red. Then he paid for his marriage from the house of treasury.” [2]
* Al-Sheikh Al-Kulaini states in Al-Kafi Book: Reported from Alaa bin Razeen that a man asked Imam Abou Abdellah (Pbuh) about masturbation. Imam (Pbuh) said: “It is one of the obscenities. Having intercourse with a female servant is better.” [3]
* Al-Sheikh Al-Sadouq states in Al-Khisal Book: Reported from Abou Baseer that he heard Imam Abou Abdellah (Pbuh) say: “Allah doesn’t talk to three on Resurrection Day, He neither looks at them nor purifies them and they will receive a painful torment: who plucks off his gray hairs, who has intercourse with himself and who has intercourse from his behind.” [4]
[1] وسائل الشيعة ج18 ص575, مستدرك الوسائل ج14 ص355,) بحار الانوار ج101 ص30 عن فقه الرضا (ع).
[2] الكافي ج7 ص265, الاستبصار ج4 ص226, تهذيب الاحكام ج10 ص63, وسائل الشيعة ج14 ص267, مجمع الفائدة ج13 ص360, التحفة السنية ص30, عوالي اللئالي ج2 ص357, الفصول المهمة ج2 ص521.
[3] الكافي ج5 ص540, وسائل الشيعة ج14 ص267.
[4] الخصال ص106, عنه البحار ج73 ص106, روضة الواعظين ص474, وسائل الشيعة ج1 ص432/ ج14 ص268, تفسير نور الثقلين ج1 ص357/ ج3 ص322, تفسير كنز الدقائق ج2 ص132.