It is narrated from Sayyiduna al-Sa'ib bin Yazid (may Allah be pleased with him) that he said: "The Messenger of Allah (peace and blessings be upon him) sought Allah's protection for me with the Opening of the Book (al-Fatihah), blowing on me with a little saliva."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Dawud bin Qays (may Allah have mercy on him) except Abdullah bin Yazid al-Bakri (may Allah have mercy on him), and Hisham (may Allah have mercy on him) is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 6761
Hadith Takhrij«أخرجه الطبراني فى «الكبير» برقم: 6692»