وروي أنه إنصرف الناس ذات يوم من مجلس إبن عباس وبقي شاب لم يبرح فقال له إبن عباس هل لك من حاجة قال نعم أردت أن أسأل مسألة فاستحييت من الناس وأنا الآن أهابك وأجلك فقال إبن عباس إن العالم بمنزلة الوالد فما كنت أفضيت به إلى ابيك فأفض إلي به فقال إني شاب لا زوجة لي وربما خشيت العنت على نفسي فربما إستمنيت ب يدي فهل في ذلك معصية فأعرض عنه إبن عباس ثم قال أف وتف نكاح الأمة خير منه وهو خير من الزنى
إحياء علوم الدين للغزالي كتاب آداب النكاح الباب الأول في الترغيب في النكاح والترغيب عنه
It was related that on a certain day the people departed from the assembly of Ibn ‘Abbas, but a young man stayed and did not leave. Ibn ‘Abbas said to him: Is there something you need? He said: Yes, I wanted to ask a question but I was embarrassed in front of people. Now I am in reverence of you and praise you. Ibn ‘Abbas said: Indeed a scholar is like a father, so whatever you were going to tell your father, tell it to me. And he said: Indeed I am a young man with no wife, and occasionally I have feared distress for myself and so I might have masturbated with my hand; is there any wrongdoing in that? And Ibn ‘Abbas turned away from him and said: Uff, filthy! Having relations with a slave girl is better than that, although it is still better than adultery.
Al-Ghazali, Ihyaa ‘Ulum Al-deen [Revival of the Religious Sciences], The book of manners in marital relations, Section one: concerning awakening of desire for marital relations and turning away from them