Hazrat Ali (may Allah be pleased with him) said regarding the sighting of the crescent moon that if two just men bear witness to seeing the moon, then celebrate Eid.

Hazrat Amr bin Dinar states that Hazrat Usman did not accept the testimony of Hashim bin Utbah regarding the sighting of the crescent moon.

Hasan, regarding the person who has seen the moon alone, says that he should fast with the people and celebrate Eid with the people.

Hasan, regarding the person who saw the moon alone, says that his sighting will not be given consideration.

Hazrat Abu Wa'il says that we were at the place of Khanqin when a letter from Hazrat Umar came to us, in which it was written that some moons are bigger than others. When you see the moon during the day, do not break your fast until two Muslims testify that they saw the moon the previous day.

Hazrat Amr bin Muhajir narrates that Muhammad bin Suwaid Fahri celebrated Eid-ul-Fitr or Eid-ul-Adha one day before the people. Hazrat Umar bin Abdul Aziz wrote him a letter asking the reason for this, so Muhammad wrote back that Hizam bin Hakeem Qureshi testified before me that he had seen the moon. Hazrat Umar bin Abdul Aziz wrote him a letter saying, "On the testimony of one man? Can he be equal to two men?"

Hazrat Abdul Kareem narrates that during the time of Hazrat Umar bin Abdul Aziz, people testified to having seen the moon during the day, saying that they had seen the moon the previous night. Hazrat Umar bin Abdul Aziz said that whoever has not eaten should complete the fast, and whoever has eaten should refrain from eating and drinking for the rest of the day.

Hazrat Ibn Jurayj says that I asked Hazrat Ata: If some people of Makkah begin the morning not fasting, or one or two people begin the morning not fasting, and then after some time someone comes and says that the moon was sighted last night, and this news reaches them in the early or late part of the day, should they fast for the rest of the day or make up this fast later? He replied: If they wish, they may continue eating and drinking; it is not obligatory for them to fast for the rest of the day.

Hazrat Ata says that if semen is discharged from a fasting person, his fast is broken.

Hazrat Ibn Jurayj says that if semen is discharged by a fasting person, his fast is broken. I asked, will he have to give expiation for the discharge of semen? He said, yes.