May a Muslim learn how to perform telepathy?

I would like to know Islam's view on telepathy based on rulings by Scholars well-grounded in the Qur'an and the Sunnah as well as the Manhaj of the Sahaabah (RAA). There is an oft-repeated incident related to telepathy about Caliph Omar (RAA) who shouted and warned another Companion (RAA) who was quite far away in Jihaad in another land. Unfortunately I do not recall the specific incidents nor can I find any reliable source for it. The question specifically is: is a Muslim allowed to learn telepathy? Is there any such thing?