The Mother of the Believers, Sayyidah Aishah (may Allah be pleased with her), narrates that the Messenger of Allah (peace and blessings be upon him) asked a group of Banu Hashim: "Is there anyone with you who is not from among you?" They said: "No, except our sister's son (or our freed slave)." So he (peace and blessings be upon him) said: "When grief or hardship befalls any of you, let him say: 'Allahu Allahu rabbi la ushriku bihi shay'a' (Allah, Allah is my Lord; I do not associate anything with Him)."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Abu Amir al-Khazzaz except Attab bin Harb, and Ibrahim bin Muhammad bin Ar'arah is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 5290
Hadith Takhrij«أخرجه ابن حبان فى «صحيحه» برقم: 864»