Chapter II sloka 52

yda te maehkill< buiĪVyRittir:yit,
tda gNtais inveRd< īaetVySy īutSy c.

yad˜ te mohakalilaÕ 
buddhirvyatitarishyati |
tad˜ gant˜si nirvedaÕ 
ūrotavyasya ūrutasya ca ( 2|52)||

When thy intellect crosses beyond the mire of delusion, then thou shalt attain to indifference as to what has been heard and what has yet to be heard.