Śrīmad-Bhāgavatam · Text 8.19.38
Who is speaking and story frame
अत्रापि बह्वृचैर्गीतं शृणु मेऽसुरसत्तम ।
सत्यमोमिति यत् प्रोक्तं यन्नेत्याहानृतं हि तत् ॥ ३८ ॥
atrāpi bahvṛcair gītaṁ
śṛṇu me ’sura-sattama
satyam om iti yat proktaṁ
yan nety āhānṛtaṁ hi tat
One might argue that since you have already promised, how can you refuse? O best of the demons, just take from me the evidence of the Bahvṛca-śruti, which says that a promise is truthful preceded by the word om and untruthful if not.
Read this verse on Vedabase.ioThis verse has no purport; its meaning is explained by the verses around it.