Slapping dream meaning is explained below using 3 different sources. Each interpretation is shown with its source.

Interpretation 1 — Ibn Seerin

(Striking) Slapping someone on his cheek in a dream means cautioning him or warning him about his heedlessness.

If a woman gently slaps her own cheeks in a dream, it means glad tiding of a son she will conceive at an advanced age, or after havinglost hope in conceivingchildren. However, slappingsomeone’s face in a dream also could mean injustice, an illness, or cold.

(Also see Slapping on the cheek)

Source: Islamic Dream Interpretation • Author: Ibn Seerin

Interpretation 2 — Zolar

lucky numbers: 15-16-22-30-35-45

being slapped: wil find yourself in bad company.

by a good friend: happiness in the family.

children: wil be treated unjustly by friends.

children, each other: are continual y insensitive.

friends: wil enjoy good results in enterprises.

man, a woman: marriage wil last forever.

woman, a man: unfaithfulness of a loved one.

Source: Zolar’s Book of Dreams Numbers and Lucky Days • Author: Zolar

Interpretation 3 — Martha Clarke

A slap always indicates a drastic reaction. It can be interpreted as a warning from the subconscious to rectify a judgment or an attitude. Maybe, the time is right to take a break along the way and reconsider. It may also warn against an illness that you have not yet noticed any symptoms of.
Source: The Big Dictionary of Dreams • Author: Martha Clarke