The word yathāyatham is irregularly formed in the sense of 'respectively, fitly, properly'.,
What is one's own nature, and whatever is natural to one, that is called यथास्व ॥ In this sense is formed यथायथ꣡म् there being doubling and neuter gender. It is an Indeclinable. As ज्ञाताः सर्वे पदार्था यथायथम् = यथास्वभावं \all objects have been known according to their respective nature\. सर्वेषां तु यथायथं यथास्मीयं ॥,