Valmiki Ramayana 1.12.2

1.12.2

abravīt praśritaṃ vākyaṃ prasavārthaṃ dvijottamam
yajño me kriyatāṃ vipra yathoktaṃ munipuṃgava

Again the spring with genial heat
Returning made the year complete.
To win him sons, without delay
His vow the king resolved to pay:
And to Vas'ishtha, saintly man,
In modest words this speech began:
'Prepare the rite with all things fit
As is ordained in Holy Writ,
And keep with utmost care afar
Whate'er its sacred forms might mar.
Thou art, my lord, my trustiest guide,
Kind-hearted, and my friend beside;
So is it meet thou undertake
This heavy task for duty's sake.'