Islam stresses on the importance of learning and demonstrates how all the factors necessary to progress in learning God has provided. An especially vital factor is the freedom to conduct research. Such freedom was encouraged right from the beginning, as is illustrated by an incident which took place after the Prophet had migrated from Mecca to Medina. There he saw some people atop the date palms pollinating them. Since dates were not grown in Mecca the Prophet had to ask what these people were doing to the trees.