Om Swami
Does hurting others with my words make my prayer and meditation useless?
Hurting people empties your sadhana
If you hurt the people around you, any meditation, sadhana or chanting is of no use. Sadhana (spiritual practice) is meant to take you to a stage where you see the divinity in everything and everyone.
If you are going to hurt people around you, sadhana is pointless, because you are trying to reach a stage where you see the divinity in everything and everyone.