Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) states: I heard the Prophet (peace and blessings be upon him); one day he (peace and blessings be upon him) mentioned "the people of a graveyard." The narrator states: the Prophet (peace and blessings be upon him) prayed for mercy for them, and prayed for mercy for them abundantly. The narrator states: the Prophet (peace and blessings be upon him) was asked about them, and the Prophet (peace and blessings be upon him) said: "The people of the graveyard are the martyrs of Asqalan; they will be escorted in procession to Paradise just as a bride is escorted to her husband."
Abu Ya'la recorded it; its chain contains a narrator, Bashir bin Maymun, and he is matruk (abandoned).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 16666