Mahabharata — Anushasana Parva, Shloka 74
जपतां जुद्धतां चैव नित्यं च प्रयतात्मनाम् | ऋषीणां परम जप्यं गुहमेतन्नराधिप,नरेश्वर! सदा शुद्धचित्त होकर जप करे, होम करनेवाले ऋषियोंके लिये यह परम गोपनीय मन्त्र है
japatāṁ yuddhatāṁ caiva nityaṁ ca prayatātmanām | ṛṣīṇāṁ parama-japyaṁ guhyam etan narādhipa ||
毗湿摩说道：“对于恒常诵持者、对于征战者、以及对于常自律者，此乃最上应诵之真言。大王啊，此为秘传之教——尤其为行持持诵（japa）与火供祭献（homa）之诸仙所设——当以恒常清净之心奉持。”
भीष्म उवाच
Educational Q&A
Bhīṣma emphasizes that a certain sacred formula (mantra/teaching) is supremely worthy of constant recitation and is to be guarded as confidential; its efficacy is linked with steady self-discipline and purity of mind, and it is applicable both to ascetics (ṛṣis) and to those engaged in worldly duty, even warfare.
In the Anuśāsana Parva, Bhīṣma continues instructing the king (Yudhiṣṭhira) on dharma. Here he introduces or praises a highly secret, supremely recitable teaching, presenting it as authoritative for sages who perform japa and homa, and as a sustaining discipline for people fulfilling demanding duties such as battle.