Hazrat Abu Ishaq says that I was in the land of Rome with Hazrat Ziyad bin Nadr. We saw the crescent of Ramadan, so the people fasted, among whom were Hazrat Abdullah, Amir bin Sa’d, Sami’, Abu Abdullah, Abu Ma’mar, and Abu Masaafi’. The people fasted for one day; on that day there were clouds in the sky. We were between two mountains named Harith and Huwairith. I did not break my fast until the night became apparent. Then the sun rose and we saw it on the mountains. So Ziyad said that we will make up this day and we did not count this fast.

Hazrat Aslam narrates that Hazrat Umar broke his fast in the month of Ramadan, and it was said to him that the sun has risen! Hazrat Umar replied that this is a minor mistake, we made every effort, therefore there is no sin upon us.