Sutra:
255. thvA.
256. ajnjanAy asakthanAy aprApthanAy ennaiyE upAyamAgap paRRiyirukkiRa unnai.

Sri PBA Swami's Sarartha Deepikai:
Now, the meaning of 'tvA' is explained.

It means - you, who does not have the knowledge to understand your actions; even if you had the knowledge, you, who does not have the power to complete them; even if you had the power, you, who is not destined to to protect yourself. Being thus, you, who have given up all dharmas and comprehended Me as the means.