“Abu Ja‘far (a.s.), once asked al-Hakam ibn ‘Utaybah, ‘What is the time for throwing pebbles?’ He (Hakam) replied, ‘It is at Zawal (declining of the sun toward the west at noontime).’ Abu Ja‘far (a.s.), then said, ‘Consider if they were two people and one of them said, ‘You stay guard for our luggage until I come back after throwing pebbles. Would this not cause him to lose the time of throwing pebbles? It (the time for throwing pebbles) by Allah, is from sunrise to sunset.’”