Yoga Sutras 3.25

Patanjali, explained by Swami Vivekananda

बलेषु हस्तिबलादीनि ॥

baleṣu hastibalādīni

By making Samyama on the strength of the elephant and others, their respective strength comes to the Yogi.

In plain words: By focusing deeply on the strength of an elephant or other strong creatures, the yogi gains that same strength.

Yoga Sutras 3.25

Ask the Swami about this

Swami Vivekananda explains

When a Yogi has attained to this Samyama and wants strength, he makes a Samyama on the strength of the elephant and gets it. Infinite energy is at the disposal of everyone if he only knows how to get it. The Yogi has discovered the science of getting it.