كتاب الأشربة
36  
The Book of Drinks
(13)
Chapter: The etiquette of eating and drinking, and rulings thereon
(13)
باب آدَابِ الطَّعَامِ وَالشَّرَابِ وَأَحْكَامِهِمَا ‏‏
Sahih Muslim 2023 c

This hadith has been reported from Zuhri with the same chain of transmitters, but he also said that Ikhtinath means that its head (i. e., of the waterskin) be turned upside down and then (water) be drank from that.

وَحَدَّثَنَاهُ عَبْدُ بْنُ حُمَيْدٍ، أَخْبَرَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنِ الزُّهْرِيِّ، بِهَذَا الإِسْنَادِ ‏.‏ مِثْلَهُ غَيْرَ أَنَّهُ قَالَ وَاخْتِنَاثُهَا أَنْ يُقْلَبَ رَأْسُهَا ثُمَّ يُشْرَبَ مِنْهُ ‏.‏
Reference : Sahih Muslim 2023 c
In-book reference : Book 36, Hadith 147
USC-MSA web (English) reference : Book 23, Hadith 5016
  (deprecated numbering scheme)