गोपयेद्देवतामिष्टां गोपयेद्गुरुमात्मनः ।
गोपयेच्च निजं मन्त्रं गोपयेन्निजमालिकाम् ॥
gopayed devatām iṣṭāṁ gopayed gurum ātmanaḥ |
gopayec ca nijaṁ mantraṁ gopayen nija-mālikām ||
(Sammohana Tantra; cited in Hari-bhakti-vilāsa: 2.147)
“One should conceal [one’s] Iṣṭa-devatā. One should conceal one’s guru. One should conceal one’s mantra. One should conceal one’s mālikā.”