وَعَنْهُ قَالَ: جَاءَ أَبُو حُمَيْدٍ رَجُلٌ مِنَ الْأَنْصَارِ مِنَ النَّقِيعِ بِإِنَاءٍ مِنْ لَبَنٍ إِلَى النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «أَلَّا خَمَّرْتَهُ وَلَوْ أنْ تعرِضَ عليهِ عوداً»

He told that when Abu Humaid, one of the Ansar, brought a vessel of milk to the Prophet from an-Naqi'* the Prophet said, “Why did you not cover it up, even by putting a piece of wood on it?” *A place in the wadi al-'Aqiq where camels which had been given in sadaqa were kept. (Bukhari and Muslim.)