No room for grief.
Moreover,
अव्यक्तोऽयमचिन्त्योऽयमविकार्योऽयमुच्यत-
तस्मादेवं विदित्वैनं नानुशोचितुमर्हसि ॥ २५ ॥
avyakto’yamacintyo’yamavikāryo’yamucyata-
tasmādevaṃ viditvainaṃ nānuśocitumarhasi .. 25 ..
Read the commentary
As the Self is inaccessible to any of the senses, He is not manifest. Wherefore, He is unthinkable. For, that alone which is perceived by the senses becomes an object of thought. Verily, the Self is unthinkable, because He is inaccessible to the senses. He is unchangeable. The Self is quite unlike milk, which, mixed with butter-milk, can be made to change its form. He is changeless, also because He has no parts; for, whatever has no parts is never found to undergo change. Because the Self is changeless, He is unchangeable. Therefore, thus understanding the Self, thou hadst better not grieve, nor think that thou art their slayer and that they are slain by thee.
Granting that the Self is not everlasting, the Lord proceeds :