All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
The Hadeeth which you mentioned, which is the saying of the Prophet : “My nation was granted in Ramadan five things that were not granted to any previous nation: 1) The smell from the mouth of a fasting person is sweeter to Allaah than the fragrance of musk; 2) the angels keep asking for forgiveness for them until they break their fast; 3) Allaah adorns His Paradise every day and then He says: ‘My fasting servants are about to be relieved of their burdens and sufferings and come to me; 4) the devils are chained; so they do not commit what they used to commit in other than it (Ramadan); 5) and they are forgiven in the last night.” The Prophet was asked: “Is it Laylat-ul-Qadr (the Night of Decree)? He replied: “No. But the laborer is paid upon finishing his work.” [Narrated by Ahmad and Al-Bazzaar & by Al-Bayhaqi in Shu’ab Al-Eemaan with chains of narrators that are disputable]
Besides, Al-Albaani classified it as Dha’eef (weak) in As-Silsilah Adh-Dha’eefah, as well as Shua’yb Al-Arna’oot when classifying the Ahaadeeth of Al-Musnad as he said: “There is another narration that supports it from the Hadeeth of Jaabir ibn ‘Abdullaah reported by Al-Bayhaqi in ‘Ash-Shu’ab’ (3603) and its chain of narrators is Dha’eef.
Allaah Knows best.