Adhyaya 40: Kali-yuga Lakshana, Yuga-sandhyamsha, and the Re-emergence of Dharma
उत्सीदन्ति नराश्चैव क्षत्रियाश् च विशः क्रमात् शूद्राणां मन्त्रयोगेन संबन्धो ब्राह्मणैः सह
utsīdanti narāścaiva kṣatriyāś ca viśaḥ kramāt śūdrāṇāṃ mantrayogena saṃbandho brāhmaṇaiḥ saha
In due course, people decline—kṣatriyas and vaiśyas as well—step by step. And by the misapplied use of mantras, śūdras come to be connected with brāhmaṇas, bringing confusion to the boundaries of the social order.
Suta Goswami (narrating the Purana to the sages at Naimisharanya; contextual description of decline in dharma)
It frames a Kali-yuga backdrop where dharma weakens and mantra-discipline becomes confused—implying that Linga-puja requires proper niyama (restraint), right transmission, and purity of practice to remain spiritually efficacious.
Indirectly: when social and ritual order collapses, refuge is sought in Pati (Shiva) as the stabilizing principle beyond decay; Shiva-tattva remains pure while pashus (souls) become further entangled through disorder and misapplied rites.
Mantra-yoga (mantra application/discipline) is highlighted—warning that mantra without proper adhikara (qualification), guidance, and observance can lead to dharmic confusion rather than liberation.