Hadith 8:175
Ibn ‘Umar reported God’s Messenger as saying, “No one must milk a man’s animal without his permission. Would any of you like his upper chamber to be entered, his treasury broken into, and his food taken away? The udders of their animals store up their food for them.” Muslim transmitted it.
وَعَنِ ابْنِ عُمَرَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا يَحْلُبَنَّ أَحَدٌ مَاشِيَةَ امْرِئٍ بِغَيْرِ إِذْنِهِ أَيُحِبُّ أَحَدُكُمْ أَنْ يُؤْتى مشْربَته فتكسر خزانته فَينْتَقل طَعَامُهُ وَإِنَّمَا يَخْزُنُ لَهُمْ ضُرُوعُ مَوَاشِيهِمْ أَطَعِمَاتِهِمْ» . رَوَاهُ مُسلم
Original Reference: Mishkat al-Masabih 2939