Teo, a father of two adult children agreed to transfer the family home to his youngest son Ah Meng. Teo passed away the next day in a road accident. Ah Kow, the eldest son claim that he has a right over the house and alleged that the contract made between Teo and Ah Meng were void due to lack of consideration. Is there any contract between Teo and Ah Meng? Give reason for your answer.