It is narrated from the son of Sayyiduna Abdullah bin Unays (may Allah be pleased with him) that his father related: I said: O Messenger of Allah, I live away on journeys (in the desert), and by the grace of Allah I pray there; so tell me a night on which I may come to this mosque and pray in it. He (peace and blessings be upon him) said: "Come on the twenty-third night."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13937