The Prophet ﷺ said: You hear (from me), and others will hear from you; and people will hear from them who heard from you.  

قَالَ رَسُولُ اللَّهِ ﷺ تَسْمَعُونَ وَيُسْمَعُ مِنْكُمْ وَيُسْمَعُ مِمَّنْ سَمِعَ مِنْكُمْ  

I heard the Messenger of Allah ﷺ say: May Allah brighten a man who hears a tradition from us, gets it by heart and passes it on to others. Many a bearer of knowledge conveys it to one who is more versed than he is; and many a bearer of knowledge is not versed in it.  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ نَضَّرَ اللَّهُ امْرَأً سَمِعَ مِنَّا حَدِيثًا فَحَفِظَهُ حَتَّى يُبَلِّغَهُ فَرُبَّ حَامِلِ فِقْهٍ إِلَى مَنْ هُوَ أَفْقَهُ مِنْهُ وَرُبَّ حَامِلِ فِقْهٍ لَيْسَ بِفَقِيهٍ  

I swear on Allah, it will be better for you that Allah should give guidance to one man through your agency than that you should acquire the red ones among the camels.  

عَنِ النَّبِيِّ ﷺ قَالَ وَاللَّهِ لأَنْ يُهْدَى بِهُدَاكَ رَجْلٌ وَاحِدٌ خَيْرٌ لَكَ مِنْ حُمْرِ النَّعَمِ