Verse 28

अथ पद्मासनगतः कृत्वा देहे स्थितिं दृढम् ।आलान इव मातङ्गं निबद्ध्येन्द्रियपञ्चकम्

In plain words

Then, seated in the lotus-posture, having made his body firmly steady, he bound the five senses — as an elephant is bound to its post.