Sahl b. Sa’d reported the prophet ﷺ as saying:
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.

حَدَّثَنَا سَعِيدُ بْنُ مَنْصُورٍ، حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ أَبِي حَازِمٍ، عَنْ أَبِيهِ، عَنْ سَهْلٍ، - يَعْنِي ابْنَ سَعْدٍ - عَنِ النَّبِيِّ ﷺ قَالَ " وَاللَّهِ لأَنْ يُهْدَى بِهُدَاكَ رَجْلٌ وَاحِدٌ خَيْرٌ لَكَ مِنْ حُمْرِ النَّعَمِ " .