Answer:
(Fatwa: 669/664=M)
The musallis can be invited to a feast any day in Ramazan, there is no proof to feed them biryani on 27th date; so if they are invited without specifying any date then it is allowed, but it is not right to appeal for donation in this regard.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
