In Islam, Prophet Adam (peace be upon him) was created with a height of sixty cubits. This is based on a hadith narrated by Abu Hurayrah from the Prophet Muhammad (peace be upon him), which states that Allah created Adam sixty cubits tall. One cubit is roughly about 18 inches (or 45 centimeters), so sixty cubits would be approximately 90 feet (around 27 meters). The hadith also mentions that people have been growing smaller over generations since Adam's creation.

This height is often understood to mean that Adam was very tall at the time of his creation, and it is also mentioned that everyone who enters Paradise will be in the form of Adam at that height. Interpretations vary, with some scholars noting this height refers to Adam's stature in Paradise or at creation, which then decreased over earthly generations.

Thus, Prophet Adam in Islamic tradition was extraordinarily tall, around 60 cubits or about 90 feet, with humanity becoming shorter over time since then.