In accordance with Sharĩ’ah, the burial should not be delayed on any account such as the arrival of family members or for any other reason.
After death, bathing and shrouding should be performed as quickly as possible. If it is possible to arrange the burial of the deceased in the morning, one should not delay until late afternoon.
Abũ Hurayrah has narrated that the Prophet said:
“Make haste in burying the deceased: because if it is the Janãzah of a pious servant, then enjoin this goodness with its station quickly; and if it is the Janãzah of an evil person then quickly dispose of such a load from your shoulders.”
(Sahih alBukhãri 1315, Sahih Muslim 944)