This is the greatest benevolence of the Islamic “Shari`ah” on the Muslims, to have directed them to practice their religions events in compliance with witnessing the moon through natural and simple method. It has further extended its favor to them to held and observe their “Ramadan” and “Eidain” in their own region, on the happening of moon sighting. So far the possibility of difference of opinion on the basis of clouds or pollution, are concerned, the same is removed through the evidences. However, in all these issues Islamic “Shari`ah” has taken the view of the difference of the atmosphere surrounding the moon at a specific time. The main Reason in the difference of opinions about moon sighting is that some of the scientists think that they can realize the existence of the crescent in the sky through observatory and other mathematical assessments or calculations. This has been very categorically clarified by the modern sciences. So why not we may benefit from this technology so that we may not be in dire need of producing witnesses for sighting the moon. It has therefore become very essential to clarify the “Shari status” of the use of modern technology in this regard. The article beforehand is aimed to prove that the creation of the moon is not sufficient for establishing the sighting of the moon but as a matter of fact witnessing the same with the naked eyes is required.