उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
मिथ्या न कारयेद्देवि क्रियया च गुरोः सदा दुर्गुणे ख्यापिते तस्य नैर्गुण्यशतभाग्भवेत्
mithyā na kārayeddevi kriyayā ca guroḥ sadā durguṇe khyāpite tasya nairguṇyaśatabhāgbhavet
O Devi, one should never, by any contrived act, fabricate falsehood regarding the Guru. If one publicizes the Guru’s supposed faults, one incurs a hundredfold share of that very demerit—thus intensifying impurity and bondage (pāśa).
Suta Goswami (narrating the Purana; verse framed as a Devi-address within the teaching)