The Creation of Adam .

"Allah ( God ) has created Adam from a handful ( of soil ) which He had gathered from all over the earth. That is how the children of Adam came according to the ( color and nature of the ) earth . There are white among them , as well as red and black, and cross colors..."

Imam Ahmad ( reference : 4/400, 406 )  has narrated from Abu Musa, who said that the Prophet Muhammad peace be upon him said the above hadith.