Mishkat al-Masabih 20 Game and Animals Which May Be Slaughtered كتاب الصيد والذبائح 76

وَعَن العبَّاسِ رَضِيَ اللَّهُ عَنْهُ قَالَ: يَا رَسُولَ اللَّهِ إِنَّا نُرِيدُ أَنْ نَكْنُسَ زَمْزَمَ وَإِنَّ فِيهَا مِنْ هَذِهِ الْجِنَّانِ يَعْنِي الْحَيَّاتِ الصِّغَارِ فَأَمَرَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِقَتْلِهِنَّ. رَوَاهُ أَبُو دَاوُد

Al-‘Abbas said, “Messenger of God, we wish to sweep out Zamzam, but in it there are some of these jinnan, ” meaning small snakes; so God’s messenger ordered that they should be killed. Abu Dawud transmitted it.