"ओँ तत्सत्" मन्त्र माहात्म्यम्The greatness of the mantra oṁ tat sat
Verse 160
ब्रह्मविष्णुमहेशानां भित्त्वा तालुशिरःशिखाः । प्रादुर्भूतोऽयमों तत्सत् सर्वमन्त्रोत्तमोत्तमः ॥ १६० ॥
brahmaviṣṇumahēśānāṁ bhittvā tāluśiraḥśikhāḥ | prādurbhūtō’yamōṁ tatsat sarvamantrōttamōttamaḥ || 160 ||
Translation
Breaking through the palate, the head and the crown-lock of Brahmā, Viṣṇu and Maheśa, this oṁ tat sat came forth, the best of the best of all mantras.
Word by word
- brahma
- of Brahmā
- viṣṇu
- Viṣṇu
- mahēśānāṁ
- and Maheśa
- bhittvā
- breaking through
- tālu
- the palate
- śiraḥ
- the head
- śikhāḥ
- and the crown-lock
- prādurbhūtō
- (prādurbhūtaḥ) came forth
- ayam
- this
- ōṁ
- oṁ
- tat
- tat
- sat
- sat
- sarva
- of all
- mantra
- mantras
- uttama
- (uttama) the best
- uttamaḥ
- (uttamaḥ) of the best
Meaning
A verse of praise describing the mantra's origin: it arises from within the three great gods and bursts through at the top of the head. The commentary does not go into the image further.

Commentary
Hariharānanda Bhāratī’s Sanskrit commentary, translated
See the commentary on verse 158.