अन्ये त्वेवमजानन्तः श्रुत्वाऽन्येभ्य उपासते।तेऽपि चातितरन्त्येव मृत्युं श्रुतिपरायणाः॥
anye tv evam ajānantaḥ śrutvānyebhya upāsatete ’pi cātitaranty eva mṛtyuṃ śruti-parāyaṇāḥ
Word by word
The verse says
Others, not knowing in these ways, worship because they have heard it from others. They too cross beyond dying, holding to what they have heard.
In plain words
A fourth route, and it is the one with no method at all.
Somebody heard it from somebody else and took it up. No meditation, no analysis, no discipline.
Te 'pi cātitaranty eva mṛtyum — they too cross over death. The word is also, and then even.
Where you've felt this · in community
Your neighbour has lit a lamp every evening for fifty years because her mother did. She could not explain the reasoning behind any of it and has never been asked. Whatever the practice is doing, it has been doing it for five decades without needing her to defend it.
Going deeper
Inherited practice is given the same destination as the three disciplined routes, and that is a generous thing for a text like this to say.
The people described here have no method and no understanding of their own. They heard it from somebody. In a chapter that has spent twelve verses on analysis and twenty qualities on conduct, this looks like a loose end, and it is placed deliberately where it is.
It also matches Chapter 9, which said that worship offered elsewhere in good faith arrives anyway.
What it protects is the majority of religious life as it is actually lived. Most people in most traditions did not choose their practice, cannot defend it philosophically, and keep it up anyway. The verse declines to treat that as second-rate, and the word it uses for them is the same word it has used throughout: they cross.