Allah, the Exalted, sent down the Divine Revelation to the Messenger of Allah (may Allah's peace and blessings be upon him) abundantly during the period preceding his death until he died at a time when the revelation had never been more abundant

Explanation

Allah, Exalted and Glorified, increased the revelation that was sent down to the Messenger of Allah (may Allah's peace and blessings be upon him) before his death to complete the Shariah, up until the Messenger (may Allah's peace and blessings be upon him) died at a time when the revelation was most abundant.