It is narrated from Sayyiduna Adi bin Hatim (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever takes an orphan into his care, whether he is his own (relative) or someone else's, until Allah Almighty makes him independent of his care, Paradise becomes obligatory for him."
Imam al-Tabarani (may Allah have mercy on him) said: "Abdullah bin Tamim bin Tarafah did not narrate any hadith with a connected chain other than this one, and this hadith is not narrated from Sayyiduna Adi bin Hatim (may Allah be pleased with him) except with this chain; al-Qasim bin Sa'id bin al-Musayyib bin Sharik is alone in narrating it."
This is how it appears in the Dar al-Haramayn printed edition, whereas the correct form is (al-Haytham Abu Sa'id), as in Majma' al-Bahrayn, and Allah knows best.
Hadith Referenceالمعجم الأوسط / باب الميم / 5345
Hadith Gradingمحدثین:إسناده ضعيف جدًّا، فيه المسيب بن شريك متروك
Hadith Takhrij«قال الهيثمي: وفيه المسيب بن شريك وهو متروك «مجمع الزوائد ومنبع الفوائد، ج 8، ص 162»»