Ayesha reported,
Khadijah took him to Waraqah bin Nawfal bin Asad bin Abd al-Uzza, her cousin, who had become a Christian during the pre-Islamic era. He used to write in Hebrew script and would copy from the Gospel in Hebrew as much as Allah willed him to write. He was an elderly man who had gone blind.Khadijah said to him, "Cousin, listen to what your nephew has to say."Waraqah said, "Nephew, what have you seen?"The Messenger of Allah ﷺ told him what he had witnessed.Waraqah said to him, "This is the same Namus that Allah sent down to Moses. I wish I were young enough, I wish I would still be alive when your people drive you out."The Messenger of Allah ﷺ asked, "Will they really drive me out?"He replied, "Yes. No man has ever brought anything like what you have brought without being met with hostility. If I live to see your day, I will support you with all my might."Not long after, Waraqah died, and the revelation paused.
Azami 10323
Sahihفي قصة أول ما بدئ به الوحي:
عن عائشة قالت
فانطلقت به خديجة حتى أتت به ورقة بن نوفل بن أسد بن عبد العزي ابن عم خديجة، وكان امرءا تنصر في الجاهلية، وكان يكتب الكتاب العبراني، فيكتب من الإنجيل بالعبرانية ما شاء الله أن يكتب، وكان شيخا كبيرا قد عمي، فقالت له خديجة: يا ابن عم اسمع من ابن أخيك، فقال له ورقة: يابن أخي ماذا تري؟ فأخبره رسول الله ﷺ خبر ما رأي، فقال له ورقة: هذا الناموس الذي نزل الله على موسي، ياليتني فيها جذعا، ليتني أكون حيا إذ يخرجك قومك، فقال رسول الله ﷺ: أو مخرجي هم؟ قال: نعم، لم يأت رجل قط بمثل ما جئت به إلا عودي، وإن يدركني يومك أنصرك نصرا مؤزرا، ثم لم ينشب ورقة أن توفي، وفتر الوحي.
Bukhari narrated it in the Book of Faith (3), and Muslim in the Book of Faith (160), both from the hadith of Layth bin Saad, from Aqeel bin Khalid, from Ibn Shihab, from Urwa, who said, "I heard Ayesha," and then he related the hadith. The wording given here is that of Bukhari, and the wording of Muslim is similar.Waraqah bin Nawfal was the son of Asad bin Abdul-Uzza bin Qusayy the Qurashi, a cousin of Khadijah, the wife of the Prophet ﷺ. He had adopted Christianity in the pre-Islamic era, though he disliked the worship of idols. Allah Almighty has said, "Say, 'O People of the Scripture, come to a word that is equitable between us and you, that we will not worship except Allah, and not associate anything with Him, and not take one another as lords besides Allah.' But if they turn away, then say, 'Bear witness that we are Muslims.'" [Al Imran 3:64]In the hadith of Ayesha, Waraqah said, "This is the namus that was sent down upon Musa. Would that I were young in it, would that I might still be alive when your people drive you out..." The apparent meaning of this is that he acknowledged the Prophet's ﷺ message, but he died before the Messenger of Allah ﷺ called people to Islam.As for his saying, "Would that I were young in it," the pronoun in "in it" refers to prophethood, meaning, would that I were a young man at the emergence of his prophethood, so that I could exert myself fully in supporting and protecting him. The namus is the angel who brings good, and what is meant here is Jibreel 
. And jadha among men refers to a young man in the prime of youth.