द्वन्द्वैकत्वं यच्च मधुब्राह्मणवाक्यैःकृत्वा शक्रोपासनमासाद्य विभूत्या ।योऽसौ सोऽहं सोऽस्म्यहमेवेति विदुर्यंतं संसारध्वान्तविनाशं हरिमीडे ॥ ३० ॥
In plain words
The two are one — that is what the sentences of the Madhu Brāhmaṇa declare. Having done the worship of Śakra and come to it by way of that splendour, they know him like this: he who is that, I am; I myself am he. Him they know — and him I praise: Hari, the ending of the darkness of saṃsāra.
Close to the Sanskrit
And that oneness of the pair which is declared by the sentences of the Madhu Brāhmaṇa — having performed the worship of Śakra, having reached it by way of that splendour — whom they know thus: 'He who is that, that am I; I myself am indeed he' — him, the destruction of the darkness of saṃsāra, Hari, I praise.