Mantra 2

ब्रह्मणश्च ते पादं ब्रवाणीति ब्रवीतु मे भगवानिति तस्मै होवाच प्राची दिक्कला प्रतीची दिक्कला दक्षिणा दिक्कलोदीची दिक्कलैष वै सोम्य चतुष्कलः पादो ब्रह्मणः प्रकाशवान्नाम ॥ ४.५.२ ॥

In plain words

And let me tell thee one foot of Brahman." "Tell me, sir." He said to him, "The east is a portion, the west is a portion, the south is a portion, the north is a portion. This, my dear, is the four-portioned foot of Brahman, whose name is the Shining.

The commentators

Chāndogyopaniṣadbhāṣyam· bhāṣya

वान् । इत्युक्तः ऋषभः तस्मै सत्यकामाय ह उवाच— प्राची दिक्कला ब्रह्मणः पादस्य चतुर्थो भागः । तथा प्रतीची दिक्कला दक्षिणा दिक्कला उदीची दिक्कला, एष वै सोम्य ब्रह्मणः पादः चतुष्कलः चतस्रः कला अवयवा यस्य सोऽयं चतुष्कलः पादो ब्रह्मणः प्रकाशवान्नाम प्रकाशवानित्येव नाम अभिधानं यस्य । तथोत्तरेऽपि पादास्त्रयश्चतुष्कला ब्रह्मणः ॥

In plain words

Thus addressed, the bull said to Satyakāma: 'The eastern direction is a quarter of Brahman, and so are the western, southern, and northern directions. Gentle one, this four-parted foot of Brahman is called Luminous. In the same way, the remaining three feet of Brahman are also four-parted.'

Close to the Sanskrit

Thus addressed, the bull said to that Satyakāma: The eastern quarter is a digit, a fourth part of Brahman's foot. Likewise the western quarter, the southern quarter, the northern quarter. This indeed, gentle one, is Brahman's four-parted foot, having four parts as its subdivisions; this four-parted foot of Brahman is named Prakashvat, luminous by name is its designation. And similarly the other three feet are also four-parted of Brahman.