ف uses the inner edge of the lower lip with the upper front teeth. Complete closure of both lips is not required: the contact is between the upper teeth and lower lip.
Listen to fa in فَتَحَ. Closing both lips as for ba prevents the proper frictional fa sound.
Repeat أَفْ slowly, observing where the upper teeth meet the lower lip. Its point must remain distinct from the lip articulation of ب and و.
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Articulation of Letters — All Seventeen Makharij
ف uses the inner edge of the lower lip with the upper front teeth. Complete closure of both lips is not required: the contact is between the upper teeth and lower lip.
Listen to fa in فَتَحَ. Closing both lips as for ba prevents the proper frictional fa sound.
Repeat أَفْ slowly, observing where the upper teeth meet the lower lip. Its point must remain distinct from the lip articulation of ب and و.