It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) used to join Sha'ban to Ramadan (that is, he kept fasting in Sha'ban until it joined Ramadan).
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Hisham except Yusuf bin Atiyyah, and Shuja' is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 5137
Hadith Gradingمحدثین:إسناده ضعيف لضعف يوسف بن عطية
Hadith Takhrij«قال الهيثمي: فيه يوسف بن عطية وهو ضعيف «مجمع الزوائد ومنبع الفوائد، ج 3، ص 192»»