221. Infrequent as final of a root

The compound kṣ is not infrequent as final of a root (generally of demonstrably secondary origin), or of a tense-stem (s-aorist: see below, 878 ff.); and, in the not very frequent cases of its internal combination, it is treated as if a single sound, following the rules for ç: thus çákṣe (cakṣ + se), cákṣva; cáṣṭe, ácaṣṭa, ásrāṣṭam, ásṛṣṭa, tváṣṭar. As to its treatment when final, see 146.

a. Thus, we are taught by the grammarians to make such forms as goráṭ, goráḍbhis, goráṭṣu (from gorákṣ); and we actually have ṣáṭ, ṣaḍbhís, ṣaṭsú from ṣakṣ or ṣaṣ (146 b). For jagdha etc. from √jakṣ, see 233 f.

b. In the single anomalous root vraçc, the compound çc is said to follow the rules for simple ç. From it are quotable the future vrakṣyáti, the gerunds vṛṣṭvā́ (AV.) and vṛktvī́ (RV.), and the participle (957 c) vṛkṇá. Its c reverts to k in the derivative vraska.