Preparing Equipment for Jihad - Section 3 Mishkat al-Masabih 3890
Arabic hadith text
عَن أنسٍ قَالَ: لَمْ يَكُنْ شَيْءٌ أَحَبَّ إِلَى رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بَعْدَ النِّسَاءِ من الْخَيل. رَوَاهُ النَّسَائِيّ
Translation
Anas said that, after women, nothing was dearer to God's Messenger than horses. Nasa’i transmitted it.