Ja'far bin Muhammad (may Allah have mercy on him) narrates from his father concerning the saying of Allah Almighty: "There has come to you a Messenger from among yourselves; grievous to him is what you suffer; he is ardently concerned for you." [Surah al-Tawbah: 128] He said: Nothing of the births of the Jahiliyyah touched him. And the Prophet (peace and blessings be upon him) said: "I was born of marriage, not of fornication."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 14077