A careful note
The 15th night — what the sources actually say.
The narrations specific to the 15th night of Sha'ban range from graded weak to hasan; none reach the strength of the Laylat al-Qadr texts. The cautious position the major Sunni schools have settled on: extra worship that night — general qiyam, sincere dua, Quran — is acceptable on its own merit. What is avoided: ritual protocols specific to this night not established in the Sunnah, designated communal liturgies, and treating it as a fixed annual ʿīd. The night is reserved as a quiet, individual exertion; it is not advertised the way Ramadan’s last ten are.
Cautious position drawn from Ibn Rajab, Ibn Taymiyyah and the major madhāhib