Completely abandoning all desires born of will, and controlling the entire cohort of senses by the mind on all sides…

Preparation for meditation: abandon kāmān saṅkalpa-prabhavān — desires born of saṅkalpa (will, mental projection, intention). This is deeper than simply avoiding sense objects.

Indriya-grāma — the group of senses — must be viniyamya (controlled) manasā (by the mind), samantataḥ (on all sides, completely). The control is internal, not external.