This Mantra / Mantra of Hanuman Ji is usually chanted regularly at some time of worship. To confirm this mantra, There exists a legislation of chanting 1.twenty five lakh mantras and twelve along with a fifty percent thousand sacrifices. त्वमस्मिन कार्य निर्योगे प्रमाणं हरिसत्तमा वातात्मजम् वानरयूथमुख्यम् श्रीरामदूतम् शरणम् प्रपद्ये॥ सर्वरोगहराय https://directory-nation.com/listings13521971/5-essential-elements-for-hanuman-chalisa