Surah 111. Al-Masad, Ayah 4

Lit., "carrier of firewood", a well-known idiomatic expression denoting one who surreptitiously carries evil tales and slander from one person to another "so as to kindle the flames of hatred between them" (Zamakhshari; see also 'Ikrimah, Mujahid and Qatadah, as quoted by Tabari). The woman's name was Arwa umm Jamil bint Harb ibn Umayyah; she was a sister of Abu Sufyan and, hence, a paternal aunt of Mu'awiyah, the founder of the Umayyad dynasty. Her hatred of Muhammad and his followers was so intense that she would often, under the cover of darkness, scatter thorns before the Prophet's house with a view to causing him hurt; and she employed her great eloquence in persistently slandering him and his message.

 Since she used to carry thorny branches and throw them in the way of the Prophet (ﷺ), she will be carrying firewood in Hell.

Abu Lahab's wife was a woman of equally passionate spite and cruelty against the sacred person of the holy Prophet. She used to tie bundles of thorns with ropes of twisted palm-leaf fibre and carry them and strew them about on dark nights in the paths which the Prophet was expected to take, in order to cause him bodily injury. "To carry firewood" may also be symbolical for carrying tales between people to embroil them. This was also one of her vices. But she was laying up for herself another kind of Fire and another kind of Rope, the Fire of Punishment, and the Rope of Slavery to Evil. Thus does Evil prepare its own fate. This is the general lesson of sustained craft and cruel wrong-doing recoiling on the wrong-doer's head. See also Introduction to this Sura.