Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:18516Abū Bakr Muḥammad b. al-Ḥasan b. Fūrak > ʿAbdullāh b. Jaʿfar b. Aḥmad > Yūnus b. Ḥabīb > Abū Dāwud > ʿAbdullāh b. al-Mubārak > ʿUtbah b. Abū Ḥakīm > Ḥarmalah > Abū al-Muṣabbiḥ al-Ḥimṣī > Kunnā Nasīr

[Machine] I heard the Messenger of Allah ﷺ saying: "Whoever wears out his feet in the cause of Allah, Allah will make them forbidden to the Fire for him. Fix my riding animal for me and make me independent of my people." So the people started to give up riding animals and I have not seen more people on foot than on that day.  

البيهقي:١٨٥١٦أَخْبَرَنَا أَبُو بَكْرٍ مُحَمَّدُ بْنُ الْحَسَنِ بْنِ فُورَكٍ أنبأ عَبْدُ اللهِ بْنُ جَعْفَرِ بْنِ أَحْمَدَ ثنا يُونُسُ بْنُ حَبِيبٍ ثنا أَبُو دَاوُدَ ثنا عَبْدُ اللهِ بْنُ الْمُبَارَكِ ثنا عُتْبَةُ بْنُ أَبِي حَكِيمٍ عَنْ حَرْمَلَةَ عَنْ أَبِي الْمُصَبِّحِ الْحِمْصِيِّ قَالَ كُنَّا نَسِيرُ فِي صَائِفَةٍ وَعَلَى النَّاسِ مَالِكُ بْنُ عَبْدِ اللهِ الْخَثْعَمِيُّ فَأَتَى عَلَى جَابِرِ بْنِ عَبْدِ اللهِ ؓ وَهُوَ يَمْشِي يَقُودُ بَغْلًا لَهُ فَقَالَ أَلَا تَرْكَبُ وَقَدْ حَمَلَكَ اللهُ؟ فَقَالَ جَابِرٌ ؓ

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ مَنِ اغْبَرَّتْ قَدَمَاهُ فِي سَبِيلِ اللهِ حَرَّمَهُمَا اللهُ عَلَى النَّارِ أَصْلِحْ لِي دَابَّتِي وَأَسْتَغْنِي عَنْ قَوْمِي فَوَثَبَ النَّاسُ عَنْ دَوَابِّهِمْ فَمَا رَأَيْتُ نَازِلًا أَكْثَرَ مِنْ يَوْمَئِذٍ