Al-Tirmidhi Hadith Hadith 1307 Narrated by Abdullah ibn Amr ibn al-'As
Allah's Messenger (peace be upon him) said, Allah, the Exalted and Glorious looks down ** on the middle night of Sha'ban and forgives all His creation except two people, ** the mushahin and the murderer.
Transmitted by Ahmad.
Ibrahim says; could be due to above hadith being construed as the middle of sha’ban . whereas the hadith says middle night and rather vague or have to be taken as the 15th of sha’ ban.
On the other hand , it is generally agreed upon ………………
Fiqh-us-Sunnah Fiqh 3.127
Fasting most of the month of Sha'ban (the month preceding Ramadan)
** The Prophet would fast most of the month of Sha'ban. ** 'Aishah said: "I never saw the Messenger of Allah fast a complete month save for Ramadan, and I have never seen him fast more in a month than he did in Sha'ban." This is related by al-Bukhari and Muslim.
Usamah ibn Zaid inquired: "O Messenger of Allah, I never find you fasting in any month like you do during the month of Sha'ban." The Prophet responded: ** "That is a month the people neglect. ** It comes between Rajab and Ramadan. ** It is a month in which the deeds are raised to the Lord of the Worlds. I love that my deeds be raised while I am fasting." ** This is related by Abu Dawud, an-Nasa'i, and by Ibn Khuzaimah in his Sahih.
Some people fast on the 15th of Sha'ban in particular, thinking that that day contains more virtues than the other days. ** This is an unsubstantiated claim. **
Al-Tirmidhi Hadith Hadith 1308 Narrated by Ali ibn AbuTalib
Allah's Messenger (peace be upon him) said: When it is the night of Sha'ban observe the prayer during the night and observe the fast during the day for Allah, the Exalted and Glorious, descends to the heaven of the world as the sun sets and says: Is there anyone who seeks forgiveness so that I may forgive him? Is there anyone who seeks sustenance so that I may provide for him? Is there anyone in trouble so that I may relieve him, and so on and so forth till the dawn breaks.
Transmitted by Ibn Majah.
Sahih Muslim Hadith Hadith 2581 Narrated by Aisha
AbuSalamah reported: I asked Aisha (Allah be pleased with her) about the fasting of the Messenger of Allah (peace be upon him). She said: He used to observe fast (at times so continuously) that we said: He has fasted (never to break), and he did not observe fast till we said: He has given up perhaps never to fast, and I never saw him observing (voluntary fasts) more in any other month than that of Sha'ban. ** (It appeared as if) he observed fast throughout the whole of Sha'ban except a few (days). **