Written by my friend Frank Schmidt:

The bṛhadaraṇyaka upaniṣad , prᾱjᾱpati brāhmaṇa offers the following wisdom:

Upon asking prᾱjᾱpati, the devᾱ-s, manuṣyᾱ-s (humans) , asurᾱs ( gods, men and demons) said  ‘give us instuction’ .

To the devᾱ He said one word,  da. He asked do you understand? The devᾱ-s said, yes, we understand.
To the manuṣyᾱ (humans)  He said one word,  da. He asked do you understand? The manuṣyᾱ said, yes, we understand
To the asurᾱs He said one word,  da. He asked do you understand? The asurᾱ-s said, yes, we understand.

Same word, 3 different meanings/comprehensions:

For the devᾱ da was understood as damyata ; from dam – to restrain, subdue , conquer + yata -held in , held forth, controlled
Hence self-control. Avoid (manage and control)  over-indulgance of the senses.

For the manuṣyᾱ da was understood as datta –  gift , donation, charity, giving;  from ‘da‘ giving, granting ; dat is often ; ta
as a noun is virtue. This datta is chairty, giving often, as a virtue.

For the asurᾱs  da was understood as dayadhvam – being  merciful ; that is day +adhva+m ;
day is to impart, allot, to have sympathy. In ‘day’ we have ‘da’ – to give ; adhva is the means, the method and resource.
Inside of
adhva we have ‘va‘ – which is auspiciousness, conciliation. This dayadhvam is the resouce of sympathy that
is ‘va‘ , auspicious.

These 3 –  dama, dāna and daya i.e.  self-control, giving, and mercy (compassion/empathy) – the wisdom of the

The gift of self-control to one’s own self brings you to the devᾱ-s i.e. enlightened vision.
The gift of giving to others brings you to fullness of being a human of divine ancestry.
The gift of compassion and mercy removes you from the mind-set of the asurᾱs.