The Messenger of Allah ﷺ said: Keep to every dark bay horse with a white blaze and white on the legs, or sorrel with a white blaze and white on the legs , or black with a white blaze and white on the legs.  

عَنْ أَبِي وَهْبٍ الْجُشَمِيِّ وَكَانَتْ لَهُ صُحْبَةٌ قَالَ قَالَ رَسُولُ اللَّهِ ﷺ عَلَيْكُمْ بِكُلِّ كُمَيْتٍ أَغَرَّ مُحَجَّلٍ أَوْ أَشْقَرَ أَغَرَّ مُحَجَّلٍ أَوْ أَدْهَمَ أَغَرَّ مُحَجَّلٍ  

The Prophet ﷺ said: Keep to every sorrel horse with a white blaze and white on the legs, or dark bay with a white blaze. He then mentioned something similar. Muhammad ibn al-Muhajir said: I asked him: Why was a sorrel horse preferred? He replied: Because the Prophet ﷺ had sent a contingent, and the man who first brought the news of victory was the rider of a sorrel horse.  

قَالَ رَسُولُ اللَّهِ ﷺ عَلَيْكُمْ بِكُلِّ أَشْقَرَ أَغَرَّ مُحَجَّلٍ أَوْ كُمَيْتٍ أَغَرَّ فَذَكَرَ نَحْوَهُ قَالَ مُحَمَّدٌ يَعْنِي ابْنَ مُهَاجِرٍ سَأَلْتُهُ لِمَ فَضَّلَ الأَشْقَرَ قَالَ لأَنَّ النَّبِيَّ ﷺ بَعَثَ سَرِيَّةً فَكَانَ أَوَّلَ مَنْ جَاءَ بِالْفَتْحِ صَاحِبُ أَشْقَرَ  

The Prophet ﷺ said: The most favoured horses are the sorrel.  

قَالَ رَسُولُ اللَّهِ ﷺ يُمْنُ الْخَيْلِ فِي شُقْرِهَا