Sayyiduna Abdullah bin Umar (may Allah be pleased with them) narrated that the Messenger of Allah (peace and blessings of Allah be upon him) said: Bilal (may Allah be pleased with him) gives the call to prayer during the night, so you may continue eating and drinking until Ibn Umm Maktum gives the call to prayer.

Narrated by Sayyidah Aisha (may Allah be pleased with her): Bilal (may Allah be pleased with him) used to call the adhan during the latter part of the night, so the Messenger of Allah (peace and blessings be upon him) said: "Keep eating and drinking until Ibn Umm Maktum (may Allah be pleased with him) calls the adhan, for he does not call the adhan until the true dawn appears."

Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: Let not Bilal’s call to prayer prevent you from eating the pre-dawn meal (suhoor), for he gives the call to prayer during the night, or (he said) he calls so that those who are awake for worship may return to rest, and those who are still asleep may become alert. No one should think that dawn or true dawn (subh sadiq) has occurred. And the Prophet (peace and blessings be upon him) demonstrated the state of the rising of dawn with his fingers: he raised his fingers upward and then slowly brought them down, and then said: This is how (the dawn) appears.

Sayyiduna Anas bin Malik (may Allah be pleased with him) narrated that the Messenger of Allah (peace and blessings be upon him) said: Eat suhoor, for there is blessing in suhoor.

Sayyiduna Anas (may Allah be pleased with him) narrated that Sayyiduna Zaid bin Thabit (may Allah be pleased with him) informed him that they once ate sahur with the Prophet (peace and blessings of Allah be upon him), then stood up for prayer. I asked how much time elapsed between the two. He replied that it was the amount of time it takes to recite fifty or sixty verses.

Sayyiduna Sahl bin Sa’d (may Allah be pleased with him) narrated that the Messenger of Allah (peace and blessings be upon him) said: As long as people hasten in breaking the fast, they will remain upon goodness.

Sayyiduna Umar (may Allah be pleased with him) narrated that the Messenger of Allah (peace and blessings of Allah be upon him) said: When the night comes from this side (the east) and the day departs from that side (the west), and the sun sets, then the time for breaking the fast has arrived.

Sayyiduna Abdullah bin Abi Awfa (may Allah be pleased with him) narrated that we were on a journey with the Messenger of Allah (peace and blessings be upon him) while fasting. The Prophet (peace and blessings be upon him) said to a companion (Sayyiduna Bilal), "Dismount and mix some sattu (barley drink) for me." He replied, "O Messenger of Allah, the sun is still up." The Prophet (peace and blessings be upon him) again said, "Dismount and mix some sattu for me." This time too, he replied, "O Messenger of Allah, the sun is still up." But your command was still the same: "Dismount and mix some sattu for me." So he dismounted and mixed the sattu. Then the Prophet (peace and blessings be upon him) pointed to one side and said, "When you see that the night has started from here, then the fasting person should break his fast."

Sayyiduna Abdullah bin Umar (may Allah be pleased with them) narrated that the Messenger of Allah (peace and blessings be upon him) forbade continuous fasting. The companions submitted, "But you observe continuous fasting?" He replied, "I am not like you; I am given food and drink."

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrated that the Messenger of Allah (peace and blessings be upon him) forbade fasting continuously (without taking suhoor and iftar). Upon this, a man from among the Muslims said, "O Messenger of Allah, but you observe continuous fasting?" He replied, "Who among you is like me? My Lord feeds me at night and gives me drink." When the people still did not refrain from fasting continuously, he fasted continuously with them for two days, then the moon of Eid appeared. He said, "If the moon had not appeared, I would have continued fasting for more days," as if, when they did not refrain from continuous fasting, he said this to punish them.