dṛṣṭvā mām ta upavrajya
kṛtva pādābhivandanam
brahmāṇam agrataḥ kṛtvā
papracchuḥ ko bhavān iti
drishtva -- thus seeing; mam -- Me; te -- they (the sages); upavrajya -- approaching; kritva -- offering; pada -- at the lotus feet; abhivandanam -- obeisances; brahmanam -- Lord Brahma; agratah -- in front; kritva -- keeping; papracchuh -- they asked; kah bhavan -- "who are You, sir?"; iti -- thus.
Srila Bhaktisiddhanta Sarasvati Thakura comments, "When Brahma was unable to answer the question placed by the sages, he fixed his mind in thought of the Supreme Lord. The Lord then assumed the form of Hamsa and appeared before Lord Brahma and the sages, who proceeded to inquire about the specific identity of the Lord."