Mishkat al-Masabih

Abu Huraira reported God's messenger as saying, “God has decreed for man his portion of fornication which he will inevitably commit. The fornication of the eye consists in looking, and of the tongue in speech. The soul wishes and desires, and the private parts accord with that or reject it.” (Bukhari and Muslim.) In a version by Muslim he said, “Man’s share of fornication which he will inevitably commit is decreed for him. The fornication of the eyes consists in looking, of the ears in hearing, of the tongue in speech, of the hand in violence, and of the foot in walking. The heart lusts and wishes, and the private parts accord with that or reject it.”

‘Imran b, Husain told of two men of Muzaina who said, “Messenger of God, tell us whether what men do to-day and strive over is something which has been destined for them and has previously been decreed for them, or whether it is something their prophet has brought them with which they are encountered and which has become binding upon them.” He replied, “No, it is something which has been destined for them and previously decreed for them.” The verification of that is found in God’s Book which says, “By a soul and Him who formed it and implanted in it its wickedness and its piety.” Muslim transmitted it.

Abu Huraira said: I told God’s messenger that I, being a young man, was afraid of committing fornication, and I had no means to enable me to marry a wife. (It was as though he was asking permission to have himself made a eunuch.) He gave me no reply, so I repeated what I had said, but he gave me no reply. I repeated it again, but he gave me no reply. I repeated it once more and the Prophet said, “Abu Huraira, the pen has written all it has to write1 about your destiny, so have yourself made a eunuch on that account, or leave things as they are.” Bukhari transmitted it.