Abu Hurairah said: "The Messenger of Allah said: 'If any one of you sells a sheep or a milch- camel, let him not refrain from milking it'.' (Sahih )
This hadith also teaches us about responsibility and accountability for our actions. Even though a person may not own an animal anymore after selling it, he still has a responsibility towards it and must take care of its needs before leaving it behind. This shows us that we must always think about our actions before taking them so as not to cause any harm or inconvenience for anyone else involved in the transaction.