Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
abudawud:5261ʿAmr b. ʿAwn > Abū ʿAwānah > Mughīrah > Ibrāhīm > Ibn Masʿūd > Āqtulūā al-Ḥayyāt Kullahā Ilā al-Jān al-Abyaḍ al--Adhī

Kill all the snakes except the little white one which looks like a silver wand. Abu Dawud said: A man said to me: A white snake does not wind in its movement. If it is correct, that is a sign in it, if Allah wills.  

أبو داود:٥٢٦١حَدَّثَنَا عَمْرُو بْنُ عَوْنٍ أَخْبَرَنَا أَبُو عَوَانَةَ عَنْ مُغِيرَةَ عَنْ إِبْرَاهِيمَ عَنِ ابْنِ مَسْعُودٍ

أَنَّهُ قَالَ اقْتُلُوا الْحَيَّاتِ كُلَّهَا إِلاَّ الْجَانَّ الأَبْيَضَ الَّذِي كَأَنَّهُ قَضِيبُ فِضَّةٍ  

قَالَ أَبُو دَاوُدَ فَقَالَ لِي إِنْسَانٌ الْجَانُّ لاَ يَنْعَرِجُ فِي مِشْيَتِهِ فَإِذَا كَانَ هَذَا صَحِيحًا كَانَتْ عَلاَمَةً فِيهِ إِنْ شَاءَ اللَّهُ