If you do agree to help out, "limit your time frame," Let the person know that "I'm only available from 10 a.m. to 12 p.m.," for example.
hadii aad rabto in aad dadka caawiso, sameyso xaduud waqtiyeed tusaale ahaan dheh "Waxaa la ii heli karaa oo kaliya inta u dhaxeysa 10:00 am ilaa 12:00 pm