عَنِ ابْنِ الْمُثَنَّى رَضِيَ اللَّهُ عَنْهُ قَالَ كُنْتُ عِنْدَ مَرْوَانَ فَدَخَلَ أَبُو سَعِيدٍ رَضِيَ اللَّهُ عَنْهُ فَقَالَ سَمِعْتَ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يَنْهَى عَنِ النَّفْخِ فِي الشَّرَابِ قَالَ نَعَمْ فَقَالَ رَجُلٌ إِنِّي لَا أُرْوَى مِنْ نَفَسٍ وَاحِدٍ قَالَ أَبِنْهُ عَنْكَ ثُمَّ تَنَفَّسْ قَالَ أَرَى فِيهِ الْقَذَاةَ قَالَ فَأَهْرِقْهَا
Ibn Mathna says: I was with Marwan when Sayyiduna Abu Sa'id (may Allah be pleased with him) arrived there. Marwan said to him: Have you heard that the Messenger of Allah (peace and blessings be upon him) forbade breathing into the drinking vessel? He said: Yes. And a man had said: O Messenger of Allah! I am not satisfied with the water drunk in one breath. The Messenger of Allah (peace and blessings be upon him) said to him: Then move the cup away from your mouth and breathe (and then drink again). He said: What if I see a straw in it? The Prophet (peace and blessings be upon him) said: Then pour it out.