ON THE SUBJECT OF 113 PROHIBITION TO BLOW OVER WATER; STRAW FOUND IN ONE'S DRINKING WATER H 772 "The Prophet, praise and peace be upon him, forbade blowing over a drink. A man asked, 'What if straws float on its surface?' He replied, 'Pour them out.' The man said, 'My thirst is not quenched by one gulp.' The Prophet, praise and peace be upon him, said, 'You may take a breath and then remove the cup from your mouth.'" R 772 Tirmidhi with a chain up to Abu Sa'id Khudri related that the Prophet, praise and peace be upon him, said this.
باب كراهة النفخ في الشراب 764- عن أَبي سعيد الخدري رضي الله عنه : أنَّ النَّبيَّ صلى الله عليه وآله وسلم نَهَى عَن النَّفْخ في الشَّرَاب ، فَقَالَ رَجُلٌ : القَذَاةُ أراها في الإناءِ ؟ فَقَالَ : "أهرقها" . قَالَ : إنِّي لا أرْوَى مِنْ نَفَسٍ وَاحدٍ ؟ قَالَ : "فَأَبِنِ القَدَحَ إِذَاً عَنْ فِيكَ" رواه الترمذي ، وقال : "حديث حسن صحيح" .