Sayyidah Sumaytah (may Allah be pleased with her) said: I heard the Messenger of Allah (peace and blessings be upon him) say: "Whoever is able to die in Madinah, let him die there, for whoever dies in Madinah, I will be a witness or an intercessor for him."
(Salih bin Abi al-Akhdar narrated it in this way, and others differed with him in its chain.)
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21193