Sayyidah Maymunah (may Allah be pleased with her) relates that she said: "O Messenger of Allah! Tell us the ruling about Bayt al-Maqdis." The Prophet (peace and blessings be upon him) said: "It is the land of the Gathering and the land of the Resurrection. Go there and pray there, for one prayer offered there is like a thousand prayers." We said: "O Messenger of Allah, what about one who is not able to go there?" The Prophet (peace and blessings be upon him) said: "Whoever is not able to go there should send olive oil to it as a gift, to be put in its lamps, for whoever sends olive oil to it as a gift will be like one who went there." (Allamah al-Haythami says:) I say: Imam Abu Dawud recorded a part of this narration, which is narrated from Sayyidah Maymunah (may Allah be pleased with her), the freedwoman of the Prophet (peace and blessings be upon him).
Imam Abu Ya'la recorded it in full from Sayyidah Maymunah (may Allah be pleased with her), the honoured wife of the Prophet (peace and blessings be upon him). And Allah knows best. Its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الحج / 5872