I got a Hadith, Given to me by a Shaikh, as reference of the significance of Nisf-e-Sha'ban (Nigh of 15th Sha'ban). Its reference is from "Silsilat ul-Ahadith-as Sahiha", Classed as Sahih By Nasiruddin Albani. As I am not a scholar, I could not verify it or understand the implementation of it. I am thus quoting the hadith from different web sites. Please let me know if this Hadith is Sahih then why some Shaikh deny the significance of this night and say that this night has no special significance.
First
The companion Mu‘āth ibn Jabal narrated that the Prophet, (pbuh) said: “On the night of mid-Shaban, Allah looks at His creation and forgives all of them except for the polytheist and the quarrelsome or hateful person." [At-Tabrāni]
[Classed as sahih by foremost Salafi hadith scholar, Shaykh Nasiruddin Albani in his Silsilah Al-Sahīhah]
http://www.islamicity.org/10209/shaban-time-avoidance-headlessness/
Second
Allah turns towards his creation in the Night of “MID-SHABAN” and He forgives all of them except for a Mushrik and one who hates other people
(Albani calls it); “A SAHIH HADITH” narrated by group of Sahaba with different routes (Turuq) such as from Muadh bin Jabal (ra), Abu Thalbah (ra) Abdullah bin Umar (ra), Abu Musa al Ashari (ra), Abu Hurraira (ra), Abu Bakr as Saddiq (ra), Awf bin Malik (ra) and Aisha (ra).The Hadith of Muadh bin Jabal (ra) comes through Makhul from Malik bin Yakhamir and It is “MARFU” narrated by Ibn Abi Asim in his As-Sunnah Hadith #512 [Nasir ud din Albani in Silsilat ul-Ahadith-as Sahiha, Volume No. 3, Page No. 135 #1144]
http://www.islamieducation.com/albani-on-laylatul-barah-ie-shab-e-baraat/
Third
Imam Ibn Hajr Haythmi states : Narrated by Muaz bin Jabal (RA) from Prophet (Salallahu alaihi wa sallam) who said: Allah turns towards his creation in the Night of Mid-Shaban and He forgives all of them except for a Mushrik and one who hates other people **[Az Zawaid #12860].
Classed as Sahih by scholar Nasiruddin Albani in his silsilah Al-Sahihah.**
http://thedailynewnation.com/news/54890/shab-e-barat--a-blessing.html
Fourth
Allah turns towards his creation in the Night of "MID-SHABAN" and He forgives all of them except for a Mushrik and one who hates other people
(Albani calls it); "A SAHIH HADITH" narrated by group of Sahaba with different routes (Turuq) such as from Muadh bin Jabal (ra), Abu Thalbah (ra) Abdullah bin Umar (ra), Abu Musa al Ashari (ra), Abu Hurraira (ra), Abu Bakr as Saddiq (ra), Awf bin Malik (ra) and Aisha (ra).The Hadith of Muadh bin Jabal (ra) comes through Makhul from Malik bin Yakhamir and It is "MARFU" narrated by Ibn Abi Asim in his As-Sunnah Hadith #512 [Nasir ud din Albani in Silsilat ul-Ahadith-as Sahiha, Volume No. 3, Page No. 135 #1144]
http://salafiaqeedah.blogspot.com/2010/11/hush-hush-al-albani.html
Fifth
Allah turns towards his creation in the Night of“MID-SHABAN” and He forgives all of them except for a Mushrik and one who hates other people
Albani says in his “Silsilat as Sahiha”: (This is a) “SAHIH HADITH” narrated by group of Sahaba with different routes (Isnaad) such as from Muadh bin Jabal (ra), Abu Thalbah (ra) Abdullah bin Amr (ra), Abu Musa al Ashari (ra), Abu Hurraira (ra), Abu Bakr as Saddiq (ra), Awf bin Malik (ra) and Aisha (ra).The Hadith of Muadh bin Jabal (ra) comes through Makhul from Malik bin Yakhamir and It is “MARFU” narrated by Ibn Abi Asim in his As-Sunnah Hadith #512 [Nasir ud din Albani in Silsilat as Sahiha, Volume No. 3, Page No. 135 #1144]
Ibn Taymiyah said in Iqtida’ al-sirat al-mustaqim:
[Some] said: There is no difference between this night (mid-Sha`ban) and other nights of the year. However, the opinion of many of the people of learning, and that of the majority of our companions (i.e. the Hanbali school) and other than them is that it is a night of superior merit, and this is what is indicated by the words of Ahmad (ibn Hanbal), in view of the many ahadith which are transmitted concerning it, and in view of what confirms this from the words and deeds transmitted from the early generations (al-athar al-salafiyya). Some of its merits have been narrated in the books of hadith of the musnad and sunan types. This holds true even if other things have been forged concerning it.
( Ref:Ibn Taymiyya, Iqtida’ al-sirat al-mustaqim p. 302.)