96:6

Nay! Verily, man does transgress all bounds (in disbelief and evil deed, etc.).
Meaning:-
Transgress: to violate a law, command, moral code, etc.; offend; sin.

96:9

Have you seen the one (Abu Jahl) who forbids
Meaning:-
Abu Jahl (Arabic‎‎): (born 556? died Wednesday, March 17, 624), was one of the Meccan polytheist pagan Qurayshi leaders known for his critical opposition towards the Islamic prophet Muhammad and the early Muslims in Mecca.
Forbids: prohibit, ban, refuse to allow (something).

96:15

Nay! If he (Abu Jahl,) ceases not, We will catch him by the forelock,
Meaning:-
Abu Jahl (Arabic‎‎): (born 556? died Wednesday, March 17, 624), was one of the Meccan polytheist pagan Qurayshi leaders known for his critical opposition towards the Islamic prophet Muhammad and the early Muslims in Mecca.
Forelock: a piece of hair that grows or falls over the forehead (= part of the face above the eyes)