[Machine] Abu Humaid Al-Ansari came with a container of milk to the Prophet ﷺ during the day when he was in Al-Baqi. The Prophet ﷺ said, "Shouldn't you cover it, even if you do so with a stick?"  

جَاءَ أَبُو حُمَيْدٍ الْأَنْصَارِيُّ بِإِنَاءٍ مِنْ لَبَنٍ نَهَارًا إِلَى النَّبِيِّ ﷺ وَهُوَ بِالْبَقِيعِ فَقَالَ النَّبِيُّ ﷺ أَلَا خَمَّرْتَهُ وَلَوْ أَنْ تَعْرُضَ عَلَيْهِ عُودًا  

Abu Humaid brought a cup of mix from a place called Al-Naqi. Messenger of Allah ﷺ said to him, "Will you not cover it, even by placing a stick across its" (Using translation from Bukhārī 5605)   

جَاءَ أَبُو حُمَيْدٍ إِلَى رَسُولِ اللهِ ﷺ بِلَبَنٍ فِي قَدَحٍ فَقَالَ لَهُ رَسُولُ اللهِ ﷺ «أَلَا خَمَّرْتَهُ؟ وَلَوْ أَنْ تَعْرِضَ عَلَيْهِ عُودًا»  

[Machine] Abu Humaid Al-Saadi came to the Messenger of Allah ﷺ with a container of milk in a pot. The Messenger of Allah ﷺ said, "Why don't you strain it? Even if you pass a stick over it."  

جَاءَ أَبُو حُمَيْدٍ السَّاعِدِيُّ إِلَى رَسُولِ اللهِ ﷺ بِلَبَنٍ فِي قَدَحٍ فَقَالَ رَسُولُ اللهِ ﷺ «أَلَا خَمَّرْتَهُ؟ وَلَوْ أَنْ تَعْرِضَ عَلَيْهِ عُودًا»