26:60Ash-Shu'araa

"We were halted at Jama when Umar bin Al-Khattab said: 'The idolaters would not depart until the sun had risen and they would say: "Let the sun shine on Thabir" and indeed the Messenger of Allah contradicted them.' So Umar departed before the rising of the sun."

The pagans used not to leave Jam' (i.e. Muzdalifa) till the sun had risen on Thabir mountain. The Prophet contradicted them by leaving (Muzdalifa) before the sun rose.

The Arabs in the pre-Islamic period did not return from al-Muzdalifah till they saw sunlight at the mountain Thabir. The Prophet (ﷺ) opposed them and returned before the sunrise.

The Messenger of Allah (ﷺ) was on his journey. They (the people) slept abandoning the Fajr prayer. They awoke by the heat of the sun. Then they travelled a little until the sun rose high. He (the Prophet) commanded the mu'adhdhin (one who called for prayer) to call for prayer. He then offered two rak'ahs of prayer (sunnah prayer) before the (obligatory) fajr prayer. Then he (the mu'adhdhin) announced for saying the prayer in congregation (i.e. he uttered iqamah). Then he led them in the morning prayer.

“At what hour did the Prophet (ﷺ) go out on this day?” He said: “When that time comes, we will go out.” So Hajjah sent a man to watch for the time when they went out. When Ibn ‘Umar wanted to set out, he said: “Has the sun passed the zenith?” They said: “It has not passed the zenith yet.” So he sat down. Then he said: “Has the sun passed the zenith?” They said: “It has not passed the zenith yet.” So he sat down. Then he said: “Has the sun passed the zenith?” They said: “Yes.” When they said that it had passed the zenith, he set out.