أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنِ ابْنِ عَبَّاسٍ، عَنْ مَيْمُونَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم مَرَّ عَلَى شَاةٍ مَيِّتَةٍ مُلْقَاةٍ فَقَالَ ‏"‏ لِمَنْ هَذِهِ ‏"‏ ‏.‏ فَقَالُوا لِمَيْمُونَةَ ‏.‏ فَقَالَ ‏"‏ مَا عَلَيْهَا لَوِ انْتَفَعَتْ بِإِهَابِهَا ‏"‏ ‏.‏ قَالُوا إِنَّهَا مَيْتَةٌ ‏.‏ فَقَالَ ‏"‏ إِنَّمَا حَرَّمَ اللَّهُ عَزَّ وَجَلَّ أَكْلَهَا ‏"‏ ‏.‏

It was narrated from Ibn Wa'lah that he asked Ibn 'Abbas

"We are attacking the Maghrib, and they are people who worship idols, and they have waterskins in which they keep milk and water." Ibn 'Abbas said: "Tanning is purification." Ibn Wa'lah said: "Is this your own opinion, or something that you heard from the Messenger of Allah?" He said: "No, (I heard it) from the Messneger of Allah."