Bhagavad Gita, Chapter 17, Verse 11

That Yajna is Sâttvika which is performed by men desiring no fruit, as enjoined by ordinance, with their mind fixed on the Yajna only, for its own sake.

Real sacrifice here is defined by three specific conditions, not by size or spectacle.

Following scripture, expecting nothing back, and acting from genuine duty are named as what actually qualifies as goodness. Real quality is measured by intention, not scale.