Sutra:
269. ma su ca:
270. nI un kAryaththilE adhikariyAmaiyAlum, nAn un kAryaththilE adhikariththuk koNdu pOrugaiyAlum, unakku sOga nimiththamillai kANenRu avanudaiya sOga nivruththiyaip paNNik kodukkiRAn.

Sri PBA Swami's Sarartha Deepikai:
mA su ca: means "Do not worry".

The Lord says "If it is your act, then you have to worry that 'what can I do for myself?'. If I do not act for you, then you have to worry that 'He is ignoring me; how will I be saved?'

Instead, having understood your true nature, you are not doing anything to save yourself. I, being your Lord, am now focused on your protection. Therefore, there is no need to worry".

The Lord says this to he who was worried before, to show that he has nothing to worry about now.