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:28:34 –

And my brother Aaron is more fluent than me in tongue, so send him with me as support, verifying me. Indeed, I fear that they will deny me."  

And my brother Aaron is more eloquent, more intelligible, than me in speech. So send him with me as a helper, as an aid (a variant reading ˹for rid’an, ‘helper’˺ is ridan) to confirm me (read ˹either˺ in apocopated form, yusadiqnī, as a response to the request, or ˹as an indicative˺ with damma inflection, yusadiqunī, as an adjectival qualification of rid’an, ‘helper’), for I truly fear that they will deny me’.
القرآن:٢٨:٣٤ –

وَأَخِي هَارُونُ هُوَ أَفْصَحُ مِنِّي لِسَانًا فَأَرْسِلْهُ مَعِيَ رِدْءًا يُصَدِّقُنِي ۖ إِنِّي أَخَافُ أَنْ يُكَذِّبُونِ  

{وأخي هارون هو أفصح مني لسانا} أبين {فأرسله معي ردْءا} معينا وفي قراءة بفتح الدال بلا همزة {يصدقْني} بالجزم جواب الدعاء وفي قراءة بالرفع وجملته صفة ردءاً {إني أخاف أن يكذبون}.