सर्वकार्येषु देवार्चनापितृतर्पणं कर्त्तव्यम्Worship of the gods and the ancestors in every rite
Verse 121
यद्येकस्मिन् दिने द्वित्रिः प्रतिष्ठा यागकर्म च । तन्त्रेण तत्र देवार्चा पितृश्राद्धाग्निसंस्क्रियाः ॥ १२१ ॥
yadyēkasmin dinē dvitriḥ pratiṣṭhā yāgakarma ca | tantrēṇa tatra dēvārcā pitṛśrāddhāgnisaṁskriyāḥ || 121 ||
Translation
If two or three installations and sacrifices fall on one day, then the worship of the gods, the śrāddha of the ancestors and the preparation of the fire are done once for all of them.
Word by word
- yadi
- if
- ēkasmin
- on one
- dinē
- day
- dvitriḥ
- two or three
- pratiṣṭhā
- installations
- yāga
- and sacrifices
- karma
- rites
- ca
- and
- tantrēṇa
- once for all
- tatra
- then
- dēva
- of the gods
- arcā
- (arcā) the worship
- pitṛ
- of the ancestors
- śrāddha
- the śrāddha
- agni
- of the fire
- saṁskriyāḥ
- (saṁskriyāḥ) the preparation
Meaning
The commentary glosses "tantreṇa" as "once only": shared preliminaries serve every rite of the day.

Commentary
Hariharānanda Bhāratī’s Sanskrit commentary, translated
Tantreṇa: once only (for all of them together).