Natyashastra
ऋषीणां ब्राह्मणानां च समवायसमागताः । निराहुता विना होमैः शूद्राचारा भविष्यथ ॥ ३९॥
"Those who have assembled with the sages and brahmins, without offerings or rituals, will adopt the conduct of the shudras."
english translation
RSINAM brAhmaNAnAM ca samavAyasamAgatAH । nirAhutA vinA homaiH zUdrAcArA bhaviSyatha ॥ 39॥
hk transliteration by Sanscript