Narrated from Zirr with reference to Ubayy bin Ka'b (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) informed us regarding this matter that the night he mentioned is the twenty-seventh night of Ramadan, and its sign is that after this night passes, the next day when the sun rises, it appears as if it is circling and it has no rays.

Abdullah narrated to us, and ‘Uthman ibn Abi Shaybah narrated to us; Ibn Idris narrated to us with his chain from the Prophet, peace and blessings be upon him, similarly, and he added in it: "It has no rays."

Zirr says that I asked Hazrat Ubayy bin Ka'b (may Allah be pleased with him) that your brother Hazrat Abdullah bin Mas'ud (may Allah be pleased with him) says that whoever stands (in prayer) the whole year can attain Laylat al-Qadr? Hazrat Ubayy (may Allah be pleased with him) replied: May Allah's mercy descend upon him, he knows that Laylat al-Qadr is in the month of Ramadan and it is on the twenty-seventh night (but he wants to keep it hidden from people so that they do not rely solely on it). Then he swore an oath (by the One who revealed the Book to Muhammad, peace be upon him, Laylat al-Qadr is on the twenty-seventh night of Ramadan). I asked, (O Abu al-Mundhir!) how do you know this? He replied: By the sign that has been told to us, that on the morning after this night, when the sun rises, it has no rays.

Zirr says: I asked Ubayy ibn Ka'b (may Allah be pleased with him) to tell me about Laylat al-Qadr, because your brother Abdullah ibn Mas'ud (may Allah be pleased with him) says that whoever stands in prayer throughout the year can attain Laylat al-Qadr? Ubayy (may Allah be pleased with him) replied: May Allah's mercy descend upon him; he knows that Laylat al-Qadr is in the month of Ramadan and it is on the twenty-seventh night, but he wants to keep it hidden from the people so that they do not rely on it and become complacent. Then he swore by the One who revealed the Book to Muhammad (peace be upon him) that Laylat al-Qadr is on the twenty-seventh night of Ramadan. I asked: O Abu'l-Mundhir! How do you know this? He replied: By the sign that was told to us—that on the morning following that night, when the sun rises, it has no rays.

It is narrated from Zirr with reference to Ubayy bin Ka'b (may Allah be pleased with him) that, by Allah, I have the most knowledge regarding the Night of Qadr. The night about which the Prophet Muhammad (peace and blessings be upon him) informed us in this regard is the twenty-seventh night of Ramadan.

Zirr says that Ubayy ibn Ka'b (may Allah be pleased with him) told me that Laylat al-Qadr is on the twenty-seventh night of Ramadan. By the sign which the Noble Prophet (peace and blessings be upon him) told us, we calculated and counted it, and it was that very night.

Zirr says: I asked Ubayy ibn Ka'b (may Allah be pleased with him) to tell me about Laylat al-Qadr, because your brother Abdullah ibn Mas'ud (may Allah be pleased with him) says that whoever stands in prayer throughout the year can attain Laylat al-Qadr? Ubayy (may Allah be pleased with him) replied: May Allah's mercy be upon him, he knows that Laylat al-Qadr is in the month of Ramadan and it is on the twenty-seventh night, but he wants to keep it hidden from the people so that they do not rely on it and become complacent. Then he swore by the One who sent down the Book upon Muhammad (peace be upon him), that Laylat al-Qadr is on the twenty-seventh night of Ramadan. I asked: O Abu al-Mundhir! How do you know this? He replied: By the sign that has been told to us, that on the morning following that night, when the sun rises, it has no rays.

Affan narrated to us, Hammad ibn Zayd narrated to us, Asim narrated to us from Zir who said: I said to Ubayy ibn Ka'b: Abu al-Mundhir, inform me about the Night of Decree. He mentioned the hadith. He said: So I said: O Abu al-Mundhir, how did you know that? He said: By the verse which the Messenger of Allah, peace and blessings be upon him, informed us of.

Zirr says that if there were not foolish people, I would have placed my hands on my ears and proclaimed that Laylat al-Qadr is in the last ten nights of Ramadan, in the last seven nights, whether in the first three nights or the latter ones. This is the report of a person who has not lied to me; it is from the one about whom the narrator has not lied (meaning Ubayy ibn Ka'b, may Allah be pleased with him, who narrates from the Prophet Muhammad, peace and blessings be upon him).

Zirr says that Abdullah bin Mas’ud (may Allah be pleased with him) used to say:“Can a person who stands (in prayer) the whole year attain Laylat al-Qadr?”I went to Uthman (may Allah be pleased with him) with the intention of meeting one of the companions of the Prophet (peace and blessings be upon him) from among the Muhajirun and Ansar. Thus, I stayed close to Ubayy bin Ka’b (may Allah be pleased with him) and Abdur Rahman bin Awf (may Allah be pleased with him). These two would get up after sunset and pray two rak’ahs before Maghrib. There was a little sternness in the temperament of Ubayy (may Allah be pleased with him). I said to him,“May Allah’s mercy descend upon you, be kind to me, I want to benefit from you.”He said,“Do you want to not leave any verse of the Qur’an without asking me about it?”I said to Ubayy bin Ka’b (may Allah be pleased with him):“Your brother Abdullah bin Mas’ud (may Allah be pleased with him) says that whoever stands (in prayer) the whole year can attain Laylat al-Qadr?”Ubayy (may Allah be pleased with him) said:“May Allah’s mercy descend upon him, he knows that Laylat al-Qadr is in the month of Ramadan, and it is the twenty-seventh night, but he wants to keep it hidden from the people so that they do not rely on it and become complacent.”Then he swore by the One who sent down the Book upon Muhammad (peace and blessings be upon him):“Laylat al-Qadr is the twenty-seventh night of Ramadan.”I said,“O Abu al-Mundhir! How do you know this?”He said:“By the sign that has been told to us: on the morning of that night, when the sun rises, it has no rays.”So, Asim would not eat suhoor on that day; when they had prayed Fajr, they would climb to the roof and look at the sun, and at that time it would have no rays until it became bright and rose high.