The affix ṭhak comes in the sense of 'this is his' after the words 1. hala and 2. sīra,
Thus हलस्येदम् = हालिकम्, सैरिकम् ॥,
Adhyāya 4 · Pāda 3 · Rule 124
The affix ṭhak comes in the sense of 'this is his' after the words 1. hala and 2. sīra,
Thus हलस्येदम् = हालिकम्, सैरिकम् ॥,