Musannaf Ibn Abi Shaybah

Hazrat Abu Marthad narrates that I was with Hazrat Abu Dharr Ghifari near the middle Jamrah. I asked him about Laylat al-Qadr, so he said: I used to ask the Messenger of Allah (peace and blessings be upon him) the most about Laylat al-Qadr. One day I submitted, "O Messenger of Allah! Laylat al-Qadr used to occur in the times of the Prophets, and when the Prophets departed from this world, this night was also taken away. Is it so?" He replied, "No, rather Laylat al-Qadr will remain until the Day of Judgment." I submitted, "O Messenger of Allah! Then please inform me about it." He said, "If I were permitted to inform you about it, I would surely have told you. However, I will say this much: seek it in one of the last seven nights of Ramadan. Now do not ask me about this matter anymore."