According to Islamic belief, the age of mankind is not explicitly mentioned in the Quran. The Quran does not provide a specific timeline for the creation of humanity or the age of the Earth. As such, Islamic scholars have diverse interpretations on this matter.
The Quran emphasizes the creation of Adam, who is considered the first human being and the father of humanity. Allah, in Islamic belief, created Adam from clay or dust, and then breathed His spirit into him, making him a living being. The story of Adam and his wife, Eve (Hawa in Arabic), is found in various verses of the Quran.
As for the age of the Earth and humanity, Islamic scholars have often interpreted the Quranic verses about creation metaphorically rather than attempting to derive precise historical timelines. Some scholars believe in a literal interpretation, while others view the creation account as symbolic and open to various interpretations.
It's essential to note that Islamic teachings primarily focus on the moral and spiritual guidance for believers and not on scientific or historical specifics. Therefore, discussions about the age of mankind or the Earth are not central to Islamic theology or salvation, and the religion encourages seeking knowledge and understanding the natural world within the boundaries of Islamic ethics and principles.