'ibadat is not mere worship and service,

[kalamazoo]

but it also implies carrying out somebody's orders and obeying him without question. Even if one curses another (as one curses Satan) but at the time follows his way, one would be performing his 'ibadat.

For other examples, see An-Nisa': 117-119; Al-Ma'idah: 60; At-Taubah: 31; Maryam: 42; AI-Qasas:63.