Haikal has bought a Kriss motorcycle from Aliff. During the stage of their negotiation, Aliff has given assurance that the motorcycle is fit to be used for journey from Kajang to Gombak. After one week of using the motorcycle, it broke down at highway. At the same time, Ahmad (Aliff's brother) came and told Haikal that the motorcycle was actually owned by him thereby he has right over the motorcycle. Advise Haikal as whether the sale of motorcycle was valid or not and what is the legal action that can be taken by Haikal against Aliff. Based your answer on the relevant sections from the Sale of Goods Act 1957 and relevant case law.