kat is substituted for ku when tṛṇa follows denoting a species.,
As कत्तृणा नाम जातिः ॥ But कुत्सितानि तृणानि = कुतृणानि ॥,
Adhyāya 6 · Pāda 3 · Rule 103
kat is substituted for ku when tṛṇa follows denoting a species.,
As कत्तृणा नाम जातिः ॥ But कुत्सितानि तृणानि = कुतृणानि ॥,