गोविन्द भाष्य (श्रील बलदेव विद्याभूषण - अचिन्त्यभेदाभेद वेदान्त ब्रह्मसूत्र भाष्य सटीक)

composed of happiness and joy that increase and decrease. Thus there is a
difference. The Lord is not like that. His happiness never increase or decreases.
Thus the qualities described in this passage of Taittirīya Upaniṣad should not be
included in every meditation on the Lord.
Sūtra 14
itare tv artha-sāmānyāt
itare—others; tu—but; artha—of result; sāmānyāt—because of equality.
But others because of the sameness of the result.
Purport by Śrīla Baladeva Vidyābhūṣaṇa
However other passages of Taittirīya Upaniṣad, such as 2.5.1 (tasmād vā
etasmāt. . . The Supersoul is full of bliss. From Him this world has come.), 2.6.2
(so 'kāmayata. . . The Supreme Personality of Godhead desired: I shall become
many. I shall father many children.), and 2.8.1 (bhīṣāsmāt. . . Out of fear of the
Supreme Lord the wind blows and the sun rises.), which appear both before and
after Taittirīya Upaniṣad 2.5.1, and which describe the Supreme Personality of
Godhead's all-pervasiveness, spiritual bliss, creation of the material universes,
supreme power and opulence, and many other of the blissful Supreme Lord's
transcendental qualities, may be included in the devotees' meditations. Why is
that? The sūtra explains: "artha-sāmānyāt" (because of the sameness of the result).
Meditation on the Lord's qualities, such as His supreme power, His opulences,
His friendliness to all, His being the shelter of all, and His granting liberation,
qualities described in the Vedānta scriptures, brings liberation as its result.
Therefore one should meditate on these qualities of the Lord.
Here someone may ask: Why is the Supreme Personality of Godhead described
as a bird in Taittirīya Upaniṣad 2.5.1? In the Kaṭha Upaniṣad it is said:
ātmānaṁ rathinaṁ viddhi
"Know that the soul is the chariot driver."
In this way the soul is described as the chariot driver and the material body is
described as the chariot. The purpose of this little parable in the Kaṭha Upaniṣad is
to teach that the devotees should diligently control their senses. However, in this