In a Neuter tat-puruṣa samāsa ending in kanthā the acute accent (udātta) falls on the first syllable of the second member.,
Thus सौशमिक꣡न्थम्, आह्वरक꣡न्थम्, चप्यक꣡न्थम् ॥ The word सौशमिः denotes the descendant of सुशमः (शोभनः शमो यस्य) आह्वर is formed by the preposition आ with the verb ष्ठ्वृ and the affix क 3.1.136 The compound is Neuter by 3.4.20. These are Genitive compounds. When the word is not Neuter we have दाक्षिकन्था ॥,