Being inquisitive to know Ushinara and being willing to bestow boons on him, those two celestials Indra and Agni, came to his sacrificial ground, Indra becoming a hawk and Agni a pigeon.
जिज्ञासमानौ वरदौ महात्मानमुशीनरम्। इन्द्रःश्येनः कपोतोऽग्निर्भूत्वा यज्ञेऽभिजग्मतुः॥