Putative flag of the <a href="https://en.wikipedia.org/wiki/en:Quraysh_(tribe)" class="extiw" title="w:en:Quraysh (tribe)">Quraish</a> carried by <a href="https://en.wikipedia.org/wiki/en:Banu_Umayyad" class="extiw" title="w:en:Banu Umayyad">Bani-Ummaiya</a>: an eagle/hawk in the center of a black field.
Original:<blockquote><p>When the democratic government was established in Makkah by Qusa bin Kalab (ancestor of Holy Prophet), he distributed different functions of government into different clans of Quraish. According to various sources these functions or ministries were between 10 to 17. There were two ministries of flag carrying; Al-Lawae (war standard) and Al-Uqaab (national flag).  There is no evidence in the recorded history about the war flag or Al-Lawae looked like and what was its color. [...] The national flag or Al-Uqaab was carried by Bani-Ummaiya. Its color was black and it probably had an eagle in its center.––<small>FLAGS OF THE WORLD</small>: <a rel="nofollow" class="external text" href="http://www.crwflags.com/fotw/flags/isl-ori.html#qur">"Evolution of Islamic Flags: The Flag of Quraish"</a></p></blockquote><a rel="nofollow" class="external text" href="http://www.crwflags.com/fotw/flags/isl-ori.html#qur"> (Source above credits Syed Junaid Imam.)</a>
<a rel="nofollow" class="external text" href="http://www.crwflags.com/fotw/flags/isl-ori.html#qur">"Evolution of Islamic Flags: The Flag of Quraish"</a>, <i><a href="https://en.wikipedia.org/wiki/en:Flags_of_the_World" class="extiw" title="w:en:Flags of the World">Flags of the World</a></i>