Mishkat al-Masabih 16 Retaliation كتاب القصاص 97

وَعَنْ جُنْدُبٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «حَدُّ السَّاحِرِ ضَرْبُهُ بِالسَّيْفِ» . رَوَاهُ التِّرْمِذِيّ

Jundub reported God’s Messenger as saying, “The punishment given to a magician is a stroke with the sword.” Tirmidhi transmitted it.