Text-64-65
SB 12.6.64-65
devarata-sutah so ’pi
charditva yajusam ganam
tato gato ’tha munayo
dadrsus tan yajur-ganan
yajumsi tittira bhutva
tal-lolupatayadaduh
taittiriya iti yajuh-
sakha asan su-pesalah
Translation:
Yajñavalkya, the son of Devarata, then vomited the mantras of the Yajur Veda and went away from there. The assembled disciples, looking greedily upon these yajur hymns, assumed the form of partridges and picked them all up. These divisions of the Yajur Veda therefore became known as the most beautiful Taittiriya-samhita, the hymns collected by partridges [tittirah].
Purport:
According to Srila Sridhara Svami, it is improper for a brahmana to collect what has been vomited, and so the powerful brahmana disciples of Vaisampayana assumed the form of tittiras, partridges, and collected the valuable mantras.