It will encompass the people! It is a severe suffering (for not having realized and fulfilled the requisites of the reality)!
Al-muntakhab fi tafsir al-Qur'an al-Karim
There and then shall your people -the Quraishites- smother out of a small danger into a great one by reason whereof ensues a great famine and they will be reduced to the painful extremities of hunger and the hungry flame devours the silent dead