अधश्चोर्ध्वं प्रसृतास्तस्य शाखा गुणप्रवृद्धा विषयप्रवालाः।अधश्च मूलान्यनुसन्ततानि कर्मानुबन्धीनि मनुष्यलोके॥
adhaś cordhvaṃ prasṛtās tasya śākhāguṇa-pravṛddhā viṣaya-pravālāḥadhaś ca mūlāny anusantatānikarmānubandhīni manuṣya-loke
Word by word
The verse says
Its branches spread below and above, fed by the three strands of nature, with the things of the senses for buds. And downward run roots as well, binding to action in the world of people.
In plain words
He fills the tree in.
The branches grow both ways, up and down. What feeds them is guṇa - the three strands that all of nature is woven from. The small new shoots on the ends are things to want.
Then a second set of roots, growing downward this time. Those are actions. Every act puts out a root, and the root holds you where you are.
Where you've felt this · with money
You buy a second-hand sofa for a room that had nothing in it. The sofa looks good, which is when you notice the curtains are the wrong colour. New curtains make the floor look bare, so you start asking the price of a rug. Nothing has gone wrong. One thing you wanted has grown three more things to want, and none of them were in the room six weeks ago.
Going deeper
Wanting grows the way a plant grows, and that is the whole point of the picture.
A bud is not a finished thing. It is the promise of another branch. Calling the things of the senses buds says that each thing you want is also the start of the next thing you will want. Being satisfied does not sit at the end of the branch, because the branch keeps going.
The second set of roots is the harder half. Roots running down into the human world are actions, and an action ties you to a result you then have to live inside. Chapter 3 made the same point in other words: work done to get something for yourself binds you, and work done without that grip does not.
So the tree is not just happening to you. You are growing it, a little, every day. Which also means some of the growing is yours to stop.