Bhashya
विद्वत्फलम्-एतासामेवाग्न्यादीना देवताना सलोकतासमानलोकता सार्ष्टिता समानर्द्धित्व सायुज्य सयुग्भावम्एकदेहदेहित्वमित्येतत् , वा शब्दोऽत्र लुप्तो द्रष्टव्य , सलो-कता वा इत्यादि , भावनाविशेषत फलविशेषोपपत्ते ।गच्छति प्राप्नोति , समुच्चयानुपपत्तेश्च ।ब्राह्मणान् न निन्देत् ,तद्व्रतम् ।‘एते वै देवा प्रत्यक्ष यद्ब्राह्मणा ’ इति श्रुतेब्राह्मणनिन्दा देवतानिन्यैवेति ॥
In plain words
The fruit attained by the wise: dwelling in the same world, sharing the same realm, equal majesty, equal opulence, intimate union, partnership, or even complete identity of embodiment with deities like Agni. The particle 'or' is understood here—'sharing the same world, or' and so on—because distinct results arise from distinct meditations, and all cannot occur at once. One must not disparage brahmins; that is the vow. Since scripture declares, 'Brahmins are verily the visible gods,' to revile a brahmin is to revile the deities themselves.
Close to the Sanskrit
The fruit for the knower: sharing the same world, sameness of world, equality of majesty, equality of opulence, intimate union, partnership, and identity of embodiment with these very deities beginning with fire. The word 'or' is to be seen as elided here—'sharing the same world or' and so forth—because specific results follow from specific meditations, and because a cumulative result is unreasonable. One must not revile brahmins; that is the vow. Because of the śruti 'These indeed are the manifest gods, namely the brahmins,' reviling brahmins is indeed reviling the deities.