"We went with the Prophet (following) a funeral. He saw people riding so he said: 'Are you not ashamed? Indeed Allah's angels are on their feet, while you are on the backs of your beasts'"  

خَرَجْنَا مَعَ رَسُولِ اللَّهِ ﷺ فِي جَنَازَةٍ فَرَأَى نَاسًا رُكْبَانًا فَقَالَ أَلاَ تَسْتَحْيُونَ إِنَّ مَلاَئِكَةَ اللَّهِ عَلَى أَقْدَامِهِمْ وَأَنْتُمْ عَلَى ظُهُورِ الدَّوَابِّ قَالَ وَفِي الْبَابِ عَنِ الْمُغِيرَةِ بْنِ شُعْبَةَ وَجَابِرِ بْنِ سَمُرَةَ