Praise be to Allah.
Smoking is haraam, growing tobacco is haraam, and dealing in it is haraam, because of the great harm which it causes. It was narrated in the hadeeth; “There should be no causing harm or reciprocating harm. Smoking is also one of al-khabaa’ith [evil things]. Allaah described the Prophet (peace and blessings of Allaah be upon him) as (interpretation of the meaning): “… he allows them as lawful al-Tayyibaat [all good and lawful things] and prohibits them as unlawful al-Khabaa’ith [all evil and unlawful things]…” [al-A’raaf 7:157]
And Allaah says (interpretation of the meaning):
“They ask you what is lawful for them. Say: ‘Lawful unto you are al-tayyibaat…” [al-Maa’idah 5:4]