Suhoor

Suhoor (Arabic: سحور lit. of the dawn‎), also called Sehur, Sehri, Sahari and Sahur in other languages, is an Islamic term referring to the meal consumed early in the morning by Muslims before fasting, sawm, in daylight hours during the Islamic month of Ramadan.

The meal is eaten before Fajr, or dawn.

ABOUT 'SEHRI' (eating something before dawn)  

1. Taking of Sehri is Sunnah. If one is not hungry and has no desire to eat, then two or three dates or some other light food may be taken or some water at least should be drunk.
2. If anyone woke up and did not eat anything as Sehri but only chewed a beta leaf, then he will get the credit of Sehri.
3. As far as possible the taking of Sehri should be delayed but not so much that the dawn may appear and put the fast in doubt.
4. If Sehri is taken early but continued to take tea etc. for long and gargled near dawn, then the credit of delayed Sehri is gained.
5. If anyone did not wake up for Sehri and all remained asleep, then fast should be observed without it. It is a sin and also cowardice not to keep a last because of not eating Sehri.
6. It is permissible to take Sehri till Fajr time starts and not after that.
7. If any one woke up late for Sehri and under the impression that it was still night took Sehri but it revealed later that it was after dawn, then the fast was not accomplished and it should be kept as a missed fast but recompense is not due. But even then nothing should be eaten or drunk and one should behave like fasting ones. In the same way if fast is broken thinking that the sun had set but the sun appeared after a while,then the fast is breached and should be kept as a postponed fast but no recompense is due, and it is also not proper how to eat or drink till the sun has actually set.
8. If the waking up was so much delayed that it was suspected to be dawn, then to eat or drink anything now is execrable and it would be a sin to do so. It after eating something it was confirmed that it was dawn, then a missed fast should be kept and if it is still doubt then a postponed fast is not essential. But as a precaution a postponed fast may be kept.