अथ यद्युदक आत्मानं पश्येत्तदभिमन्त्रयेत मयि तेज इन्द्रियं यशो द्रविणं सुकृतमिति ।श्रीर्ह वा एषा स्त्रीणां यन्मलोद्वासाः ।तस्मान्मलोद्वाससं यशस्विनीमभिक्रम्योपमन्त्रयेत ॥बृह. ६,४.६ ॥
In plain words
And if he sees himself in water, let him say over it: "In me be splendour, vigour, glory, wealth and merit." She is the loveliest of women who has put off her soiled clothes. Therefore let him approach her when she has put off her soiled clothes and is radiant, and speak to her.
The commentators
Bṛhadāraṇyakopaniṣadbhāṣyam· bhāṣya
अथ यदि कदाचित् उदके आत्मानम् आत्मच्छायां पश्येत्, तत्रापि अभिमन्त्रयेत अनेन मन्त्रेण 'मयि तेजः' इति । श्रीर्ह वा एषा पत्नी स्त्रीणां मध्ये यत् यस्मात् मलो- सा चेदस्मै दद्यान्, अनुगुणैव स्याद्भर्तुः, तदा अनेन मन्त्रेण उपगच्छेत् 'इन्द्रियेण ते यशसा यश आदधामि' इति ; तदा यशस्विनावेव उभावपि भवतः ॥
In plain words
And if he ever sees his own reflection in water, he should speak the same charm to it: 'Let luster be in me.' What makes a wife glorious among women is this — — if she gives herself to him, she suits her husband perfectly; then he should come to her with this: 'With my vigor, with your fame, I give you fame.' And then both of them, together, become renowned.
Close to the Sanskrit
Now, if at any time he should see himself, his own reflection, in water, there too he should recite with this mantra: 'In me [be] luster.' This indeed is the glory of a wife among women — that [she is free of] soil … — should she give herself to him, she would be well-suited indeed to her husband; then he should approach her with this mantra: 'With vigor, with your fame, I confer fame' — then both of them alike become renowned.