بسم الله الرحمن الرحيم
(Fatwa: 248/251/B=3/1438)
You are not required to do qurbani separately. Yes, if you had Rs 28000 cash with you during the days of qurbani then in this case you shall become owner of nisab and qurbani shall be wajib on you. However, for zakah it is a condition that the wealth remains in hand in the beginning and end of the year equal to nisab.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
