سيدنا محمد

When the Prophet (pbuh) heard this, he said it was a true
vision from Allah. He sent for Bilal, who had a beautiful, strong
voice, and ordered him to call the people to prayer in just this
way. Bilal did so and soon after 'Umar came out of his house
and told the Prophet (pbuh) that he had seen exactly the same
vision himself.
The Prophet (pbuh) replied, 'Allah be praised for that.' The
adhan, or call to prayer, which came to 'Abd Allah ibn Zayd in his
dream and was performed by Bilal on the instruction of the Prophet
(pbuh), is the one we still hear today being called from the minarets
of mosques all over the world.
The Battle Of Badr
The Muslims who had gone to Medinah, had left all their
belongings behind in Mecca and these had been taken by their
enemies. Thus, when the Muslims heard that Abu Sufyan, one
of the leaders of Quraysh, was on his way back to Mecca from
Syria with a large caravan of goods, they decided that the time
had come for them to retrieve some of their losses. The
Prophet (pbuh) gave the Muslims permission for this attack
and everyone began to get ready for the raid, for it had been
revealed:
In the Name of Allah, the Beneficent, the Merciful
“Permission to fight is given unto those who fight because
they have been wronged; and Allah is surely able to give them
victory” (Koran xxii.39)
“The Revelation had mentioned that a thing most serious
with Allah was to turn (men) from the way of Allah, and to
disbelieve in Him and in the Holy Mosque, and to drive his
people from there…for persecution is worse than
killing”.(Koran ii.217)