Criticism has also been directed at apparent contradictions within Bukhari regarding the ahruf of the Quran. Some narrations state the Quran was revealed only in the dialect of Muhammad's tribe, the Quraysh, while others state it was revealed in seven ahruf.Melchert 2008, p. 83."Virtues of the Qur'an. Book 61, Number 507". Sahih al-BukhariShamoun, Sam. "The Seven Ahruf and Multiple Qiraat – A Quranic Perspective". Answering Islam. Certain prophetic medicine and remedies espoused in Bukhari, such as cupping, have been noted for being unscientific. Sunni scholar Ibn Hajar al-Asqalani, on the basis of contrary archaeological evidence, criticised the hadith which claimed that Adam's height was 60 cubits and human height has been decreasing ever since.
