Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) reports this saying of the Prophet (peace and blessings be upon him): "(On the night of the Mi'raj) whichever heaven I passed through, the angels said the same: O Muhammad! Instruct your Ummah to have cupping done, to use costus (qust, a herb), and to use shuniz (black seed)."
Al-Bazzar recorded it. Its chain contains Attaf bin Khalid, who is thiqah (trustworthy), though he has been criticised.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الطب / 8316
Hadith Gradingمحدثین:إسنادہ حسن۔
Hadith Takhrij«اخرجه البزار فى المسند (3020) ، أخرجه المعجم الكبير للطبراني برقم: 11367، 11887، وأخرجه البحر الزخار المعروف بمسند البزار 10 - 18 برقم: 5970»