Mahabharata 1.152.19

1.152.19

tato jānapadāḥ sarve ājagmurnagaraṃ prati |
tadadbhutatamaṃ draṣṭuṃ pārthāstatraiva cāvasan || 19 ||

Then those Brahmanas and Kshatriyas (of the city), hearing this, wondered much. And the Vaisyas and the Sudras also became exceedingly glad, and they all established a festival in which the worship of Brahmanas was the principal ceremony (in remembrance of this Brahmana who had relieved them from their fears of Vaka).