Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said: Damrah bin Jundub (may Allah be pleased with him) set out from his house intending to emigrate, and he said to his family: Carry me and take me out of the land of the polytheists to the Messenger of Allah (peace and blessings be upon him). Then he died on the way, before he could reach the Prophet (peace and blessings be upon him). The narrator said: So this revelation came down: "And whoever leaves his house as an emigrant to Allah and His Messenger" [Surah al-Nisa': 100] until it reached "and Allah is Forgiving, Merciful" [Surah al-Nisa': 96].
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 11659