devarāta-sutaḥ so 'pi
charditvā yajuṣāṁ gaṇam
tato gato 'tha munayo
dadṛśus tān yajur-gaṇān
yajūṁṣi tittirā bhūtvā
tal-lolupatayādaduḥ
taittirīyā iti yajuḥ-
śākhā āsan su-peśalāḥ
devarāta-sutaḥ - the son of Devarāta (Yājñavalkya); saḥ - he; api - indeed; charditvā - vomiting; yajuṣām - of the Yajur Veda; gaṇam - the collected mantras; tataḥ - from there; gataḥ - having gone; atha - then; munayaḥ - the sages; dadṛśuḥ - saw; tān - those; yajuḥ-gaṇān - yajur-mantras; yajūṁsi - these yajurs; tittirāḥ - partridges; bhūtvā - becoming; tat - for those mantras; lolupatayā - with greedy desire; ādaduḥ - picked them up; taittirīyāḥ - known as Taittirīya; iti - thus; yajuḥ-śākhāḥ - branches of the Yajur Veda; āsan - came into being; su-peśalāḥ - most beautiful.
According to Śrīla Śrīdhara Svāmī, it is improper for a brāhmaṇa to collect what has been vomited, and so the powerful brāhmaṇa disciples of Vaiśampāyana assumed the form of tittiras, partridges, and collected the valuable mantras.