Sayyiduna Samurah bin Jundub (may Allah be pleased with him) said that the Prophet (peace and blessings be upon him) said: "When you come upon livestock and their owner is there, take his permission, then milk and drink. If the owner is not there, call out three times. If the owner comes, take his permission; otherwise milk and drink, but do not carry any away."
The Shaykh said: Some of the hadith masters (huffaz) do not accept the hadiths of al-Hasan from Samurah as established, and claim that they come from a written book, except the hadith of the aqiqah in which hearing is mentioned. And if this hadith is sahih, then it applies to a time of necessity.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19654