Yoga sutras of Patanjali - One pointed concentration [commentary]
Type of Spiritual Experience
A description of the experience
The Yoga Sutras of Patanjali – translation and commentary by Sri Swami Satchidananda
Why do you want to have this one pointed concentration? To make the mind clear so you can transcend it. You are not going to cling to the object but just use it as a ladder to climb up.
Once you have reached the roof you leave the ladder behind