The affix ḍhak comes optionally in the sense of descendant after the word duṣkula,
Thus दौष्कुलेयः ॥ By the force of the word 'optionally' we get ख also. Thus दुष्कुलीनः ॥,
Adhyāya 4 · Pāda 1 · Rule 142
The affix ḍhak comes optionally in the sense of descendant after the word duṣkula,
Thus दौष्कुलेयः ॥ By the force of the word 'optionally' we get ख also. Thus दुष्कुलीनः ॥,