Whenever Mohammed was confronted by throngs of unbelievers who doubt his prophetic claims, he would say that he was just sent to warn the people and not to perform miracles. There were even times that he would ask the provocateurs to wait and yet nothing ever happens. One can’t blame the Jews and Christians especially in Yathrib (Medina) because they knew the fact that real prophets can really perform miracles as recorded in their writings and oral traditions.