Shloka 23
Puṣkara-Śapatha Itihāsa (Agastya–Indra Dispute at the Tīrthas) | पुष्कर-शपथ-आख्यानम्
ते च सर्वे तपस्यन्त: पुरा चेरुर्महीमिमाम् | समाधिनोपशिक्षन्तो ब्रह्मलोक॑ सनातनम्
te ca sarve tapasyantaḥ purā cerur mahīm imām | samādhinopaśikṣanto brahmalokaṃ sanātanam ||
ビーシュマは語った。「そして彼らは皆、苦行を修し、かつてこの大地を遍歴した。深い三昧（サマーディ）によって自らを鍛え、永遠なる梵天界（ブラフマ・ローカ）へと向かったのである。」
भीष्म उवाच
Educational Q&A
The verse emphasizes that sustained tapas (austerity and self-discipline) combined with samādhi (deep meditative steadiness) is a traditional path toward the highest spiritual goal, described here as the eternal Brahmaloka. Ethical life is implied as inner training: mastering desire and distraction to orient oneself toward the supreme good.
Bhīṣma is describing earlier exemplars—“all of them”—who in ancient times lived as ascetics, moving across the earth while practicing austerities. Their wandering is not aimless; it is framed as disciplined spiritual training through samādhi aimed at attaining the eternal Brahmaloka.