The Prophet (may Allah's peace and blessings be upon him) defined the time in which a fasting person should refrain from eating during the month of Ramadan; that is the time of "al-Fajr as-Sādiq" (the true dawn). He pointed out that a Muslim may eat and drink till the Adhān of the real dawn. In its meaning, this Hadīth is linked to other versions which demonstrate that there were two Adhāns for Fajr during the Prophet's lifetime: The first Adhān was proclaimed by Bilāl ibn Rabāh (may Allah be pleased with him). This is the one about which the Prophet (may Allah's peace and blessings be upon him) said: "Do not be misled with regard to your Suhūr by the Adhān of Bilāl or the whiteness of the horizon that grows long in this way." This teaches the Muslims that they may eat and drink when they hear the Adhān of Bilāl, for it was only intended to give notice that the time of Fajr was approaching. The Adhān of Bilāl was proclaimed at the time when the whiteness of the horizon grows long in the sky. And it was meant to make the sleeping person wake up and alert the one standing in prayer. It was followed by the second Adhān, which was proclaimed by Ibn ’Umm Maktūm. Upon hearing it, the people would abstain from food and drink and start fasting. The Prophet (may Allah's peace and blessings be upon him) directed the people to the sign of the true dawn. He commanded them to eat and drink till "it spreads this way" i.e., until dawn appears extended on the horizon..