Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:51:28 –

And he felt from them apprehension. They said, "Fear not," and gave him good tidings of a learned boy.  

Then he conceived, he kept secret in himself, a fear of them. They said, ‘Do not be afraid!’, we are messengers from your Lord. And they gave him good tidings of ˹the birth of˺ a knowledgeable boy, one endowed with much knowledge, and this was Isaac, as mentioned in sūrat Hūd ˹Q. 11:71˺.
القرآن:٥١:٢٨ –

فَأَوْجَسَ مِنْهُمْ خِيفَةً ۖ قَالُوا لَا تَخَفْ ۖ وَبَشَّرُوهُ بِغُلَامٍ عَلِيمٍ  

{فأوجس} أضمر في نفسه {منهم خيفة قالوا لا تخف} إنا رسل ربك {وبشروه بغلام عليم} ذي علم كثير وهو إسحاق كما ذكر في هود.