Sunan Ibn Majah, Volume 4, Book 24, Hadith 2794 (DarusSalam) ⓘ
It was narrated that ‘Amr bin ‘Abasah said: “I came to the Prophet and said: ‘O Messenger of Allah, which Jihad is best?’ He said: ‘(That of a man) whose blood is shed and his horse is wounded.’”
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا يَعْلَى بْنُ عُبَيْدٍ، حَدَّثَنَا حَجَّاجُ بْنُ دِينَارٍ، عَنْ مُحَمَّدِ بْنِ ذَكْوَانَ، عَنْ شَهْرِ بْنِ حَوْشَبٍ، عَنْ عَمْرِو بْنِ عَبَسَةَ، قَالَ أَتَيْتُ النَّبِيَّ صلى الله عليه وسلم فَقُلْتُ يَا رَسُولَ اللَّهِ أَىُّ الْجِهَادِ أَفْضَلُ قَالَ " مَنْ أُهْرِيقَ دَمُهُ وَعُقِرَ جَوَادُهُ " .
also referenced under: Hadith 2794 (Reference) & Book 24, Hadith 2900 (In-Book)