Teaching the Quran: how many verses at a time?

Abu Abd al-Rahman said: One of the companions of the Prophet (peace and blessings be upon him) who used to teach us the Qur'an narrated to us. He said: "The Companions used to learn ten verses from the Messenger of Allah (peace and blessings be upon him), and they would not learn the next ten verses until they knew what these verses contained of practice and knowledge." He said: "We learned both knowledge and practice."

Khalid bin Dinar said that Abu al-Aliyah said: "Learn the Qur'an five verses at a time, for the Messenger of Allah (peace and blessings be upon him) also used to learn five verses at a time."

Isma'il said that Abu Abd al-Rahman used to teach us five verses at a time.