The affix ini (in) comes in the sense of matup after the word hasta when a genus is denoted by the word so formed.,
Thus हस्तोऽस्यास्ति = हस्तिन् 'elephant'. Why do we say when meaning a जाति 'a genus' ? Observe हस्तवान् पुरुषः ॥,
हस्ताज् जातौ
Adhyāya 5 · Pāda 2 · Rule 133