Who was the first person to fast in Islam?

Al-Suyuti mentioned that the first to fast was Adam, peace be upon him, three days out of every month. Ibn Abi Hatim narrated from Al-Dahhak that the first fast was observed by Noah, and then by those after him, until the Prophet, peace and blessings be upon him, and his companions fasted it—three days of every month until 'Isha. The first to fast in Islam were the Prophet, peace and blessings be upon him, and his companions, in imitation of him and in compliance with his command, until the fasting of the month of Ramadan was enjoined.