Markandeyapurana 4.28

4.28

eteṣu gocaro 'smākaṃ buddherbrāhmaṇasattama /
pratijñāntu samāroḍhuṃ tathāpi nahi śaknumaḥ //

The birds spoke:
“The matter being one specially known to us, we will declare it; listen then, free from distrust; why should we not tell thee that of which our intellects are cognizant? For even in the four Vedas, for in the Dharma-śastras also, and in all the Aṅgas and whatever else is conformable to the Vedas— in these does our intellect range, O best of brāhmans; but nevertheless we are not able to give a promise. Therefore declare fearlessly what is doubtful in the Mahābhārata; we will declare it to thee, O thou who art wise in the law; if not there will be bewilderment.”