मंत्र प्रयोग किसी ऐसे व्यक्ति के प्रति करें,जिसे आप जानते हों तथा जो आपसे भी परिचित हो . The sound waves contained in the words which compose the mantras can change the destiny of human beings.The benefits can only be judged right after striving them. This is a strongest Hanuman https://www.youtube.com/watch?v=eeXt928hL4U