Verse 51

चित्सर्गोपरमाकाशे ब्रह्मणो यन्मनःफलम् ।उदेति प्रथमः सैव ब्रह्मत्वं समवाश्नुते

In plain words

In the space where the creation of cit comes to rest, whatever fruit of mind of Brahman rises first — that alone attains to Brahmā-hood.