नानामन्त्राश्च यन्त्राणि सिद्धोपायान्यनेकशः ।
भूरिप्रयाससाध्यानि यथोक्तफलदानि च ॥२५॥
nānāmantrāśca yantrāṇi siddhopāyānyanekaśaḥ |
bhūriprayāsasādhyāni yathoktaphaladāni ca ||25||
and manifold mantras and yantras, efficacious means in many forms, achievable only with great effort, yet granting the fruit as stated.