Meaning
Supreme God Krishna spoke
Shutting out all external objects, focusing the eyes on the middle of the eyebrows, making even, or neutralizing, the currents of Prāna and Apāna (inhalation and exhalation) in the nostrils, (5:27)
An advanced spiritual seeker—who holds Nirvāna or spiritual emancipation as the sole object of his life and therefore frees himself from all hankerings, fear, and fury—tames his senses, mind and intelligence, and thus stands virtually emancipated {even before finally stepping into the Being of God-the-Supreme on giving up his body, never to return}. (5:28)
Sanskrit
श्रीभगवान् उवाच
स्पर्शान्कृत्वा बहिर्बाह्यांश्चक्षुश्चैवान्तरे भ्रुवोः ।
प्राणापानौ समौ कृत्वा नासाभ्यन्तरचारिणौ ॥
Word-by-word
स्पर्शान् कृत्वा बहिः बाह्यान्, चक्षुः च एव अन्तरे भ्रुवोः,
प्राण-अपानौ समौ कृत्वा, नासा-अभ्यन्तर-चारिणौ।