عَنْ أَبِي الْمُصَبِّحِ الْأَوْزَاعِيِّ رَضِيَ اللَّهُ عَنْهُ حَدَّثَهُمْ قَالَ بَيْنَا نَسِيرُ فِي دَرْبِ قَلَمْيَةَ إِذْ نَادَى الْأَمِيرُ مَالِكُ بْنُ عَبْدِ اللَّهِ الْخَثْعَمِيُّ رَجُلًا يَقُودُ فَرَسَهُ فِي عِرَاضِ الْجَبَلِ يَا أَبَا عَبْدِ اللَّهِ أَلَا تَرْكَبُ قَالَ إِنِّي سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يَقُولُ مَنِ اغْبَرَّتْ قَدَمَاهُ فِي سَبِيلِ اللَّهِ عَزَّ وَجَلَّ سَاعَةً مِنْ نَهَارٍ فَهُمَا حَرَامٌ عَلَى النَّارِ
Abu Musabbih narrates from Awza'i, he says: We were walking on the open road entering the Qalamiyah region of the land of Rome, when Malik bin Abdullah Khath'ami, who was the leader, called out to a man who was walking at the foot of the mountain. The leader said: O Abu Abdullah! Will you not ride? For I heard the Messenger of Allah, peace and blessings be upon him, say: Whoever's two feet become dusty in the way of Allah for some part of the day, Allah will make the Fire forbidden for him.