President M Abdul Hamid and Prime Minister Sheikh Hasina on Thursday greeted the countrymen and the Muslims across the world on the occasion of the holy Eid-e-Miladunnabi, the birth anniversary of the Great Prophet Hazrat Muhammad (PBUH).In separate messages on the eve of the day, they underscored the need for following the ideals of the Prophet for peace and prosperity.In his message, President Abdul Hamid said Allah had sent Hazrat Muhammad (PBUH) to this world as a blessing for the entire universe.The Prophet has been successful to discharge his duty of establishing `tawhid` in the world with his efficiency, greatness, tolerance, hard work, devotion and limitless sufferings, he added.He is regarded as the greatest human being because of his extraordinary personality, good behavior, and love towards the creation, unique trustworthiness and boundless kindness.The `Madina Charter`, the first written constitution of history, which was formulated under the leadership of the Prophet in the year 622, contains the best declaration of establishing the rights and dignity of all irrespective of religion, colour and caste, the President said.He prayed that the ideals of Prophet Hazrat Muhammad (PBUH) enlighten the lives of all.Prime Minister Sheikh Hasina, in her message, said Allah had sent Hazrat Muhammad (PBUH) as `Rahmatullil Alamin`.He had emerged as the savior in the world filled with sinful acts, repression, falsehood, prejudice and conflicts, she added.The Prophet had established brotherhood, justice and equity-based society.She expressed firm conviction that the peace and welfare could be ensured in the current turbulent world by following the ideals of the Prophet (PBUH).