Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) says that the Messenger of Allah (peace and blessings be upon him) said: "No one should milk another's animals without his permission. Would any of you like his food store to be broken into and his food scattered? The udders of their livestock likewise store their food, so no one should milk another's animals without his permission."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19643
Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) said that the Messenger of Allah (peace and blessings be upon him) forbade milking livestock without the permission of their owners, and he said: "Would any of you like someone to come to his storeroom, in which his food is kept, and carry off what is in it? The udders of their livestock are like what is in their storerooms."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19644
Sayyiduna Abu Humayd al-Sa'idi (may Allah be pleased with him) narrates from the Messenger of Allah (peace and blessings be upon him) that he (peace and blessings be upon him) said: "It is not lawful for anyone to take even someone's staff without permission, because Allah Almighty has made the property of a Muslim unlawful for a Muslim."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19645
A freed slave of Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him) narrated: We were with Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him) when we came to an orchard of date palms. Sayyiduna Sa'd (may Allah be pleased with him) gave us two dirhams so that we could buy fodder and dates, but I found no one at all in the orchard. I came back and told him, and he said: If it would please you to be a true believer, then do not eat a single date from the palms. So we and our donkey spent the night hungry.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19646
Nafi' narrates from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that when he was asked: May we eat the fruit that has fallen from a date palm? he said: Do not eat even a single date.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19647