مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 522
Purification
Wiping Over the Shoes - Section 2
وَعنهُ قَالَ: رَأَيْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يمسح على الْخُفَّيْنِ على ظاهرهما. رَوَاهُ التِّرْمِذِيّ وَأَبُو دَاوُد
He also said, “I saw the Prophet (ﷺ) wiping over the upper part of his shoes.” Tirmidhi and Abu Dawud transmitted it.
Mishkat al-Masabih, 522صَحِيح (الألباني)