عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ نَهَى أَنْ يُشْرَبَ مِنْ فِي السِّقَاءِ قَالَ أَيُّوبُ أَحَدُ الرُّوَاةِ فَأُنْبِئْتُ أَنَّ رَجُلًا شَرِبَ مِنْ فِي السِّقَاءِ فَخَرَجَتْ حَيَّةٌ
Syedna Abu Hurairah (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) forbade drinking water directly from the mouth of a water-skin. Ayub, the narrator, says: Someone told me that a man drank water from the mouth of a water-skin, and a snake came out from it.