Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) reports this saying of the Prophet (peace and blessings be upon him): "I was commanded to use the miswak until I thought that Qur'an would be revealed to me about it (the narrator is unsure; perhaps the words are:) that revelation would be sent down."
Abu Ya'la recorded it.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصلاة / 2556
Hadith Gradingمحدثین:إسناده ضعيف، لكن الحديث صحيح لوجود شاهدٍ له