Quran 9:91 — Ultimatum (Bara'ah)

Not to be blamed are those who are weak, or ill, or do not find anything to offer, so long as they remain devoted to GOD and His messenger. The righteous among them shall not be blamed. GOD is Forgiver, Most Merciful.

[9:90] The Arabs made up excuses, and came to you seeking permission to stay behind. This is indicative of their rejection of GOD and His messenger—they stay behind. Indeed, those who disbelieve among them have incurred a painful retribution.

[9:92] Also excused are those who come to you wishing to be included with you, but you tell them, "I do not have anything to carry you on." They then turn back with tears in their eyes, genuinely saddened that they could not afford to contribute.