Mishkat al-Masabih 6 Zakat كتاب الزكاة 20

وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «يَكُونُ كَنْزُ أَحَدِكُمْ يَوْمَ الْقِيَامَةِ شُجَاعًا أَقْرَعَ يَفِرُّ مِنْهُ صَاحِبُهُ وَهُوَ يَطْلُبُهُ حَتَّى يُلْقِمَهُ أَصَابِعه» . رَوَاهُ أَحْمد

He reported God’s messenger as saying, “The treasure of one of you on the day of resurrection will be a large bald snake from which he will flee, but it will keep following after him till he gives it his fingers to eat.” Ahmad transmitted it.