The word rājan optionally retains its original accent in a karmadhāraya samāsa before the words brāhmaṇa and kumāra,
Thus रा꣡जब्राह्मणः or राजब्राह्मणा꣡, रा꣡जकुमारः or राजकुमारः꣡ ॥ The word राजन् is formed by the affix कनिन् added to राज् (Unadi I. 156). But राज्ञो ब्राह्मण = राजब्राह्मणः where the compound is not Karmadharaya. The making of this a separate aphorism is for the purpose of preventing the yathasankhya rule and also for the sake of the subsequent sutra into which the anuvritti of राजन् runs and not of आर्य ॥,