सर्वं ब्रह्मेति विज्ञानादिन्द्रियग्रामसंयमः ।यमोऽयमिति सम्प्रोक्तोऽभ्यसनीयो मुहुर्मुहुः ॥ १०४ ॥
In plain words
All of this is Brahman — and once you know that, the whole crowd of senses grows quiet on its own. That quieting is what is called yama. Practise it again and again.
Close to the Sanskrit
From the realization 'all is Brahman' comes the restraint of the host of the senses. This is declared to be yama, and it is to be practised again and again.