होय सिद्धि साखी गौरीसा ॥३९॥ तुलसीदास सदा हरि चेरा । Regardless of what mantra you chant Hanuman Ji, keeping in mind its which means, chant it little by little or mentally with entire devotion. Under no circumstances chant the mantra aloud. भीम रुप धरि असुर संहारे। रामचन्द्र के काज संवारे॥ https://seodirectory4u.com/listings13213601/the-definitive-guide-to-hanuman-chalisa