“… From then on, he wrote constantly. For Muslims, his masterpiece was Muhammad: His Life Based On The Earliest Sources (1983), for which he was decorated by Zia al-Haq, then president of Pakistan.
…”
He died 12 May - Innalilahe wa inna alehe rajeoun.
For a brief outline of his works and achievements:
“converted to Islam, and was soon imbued with the Sufi dimension of the religion.”
May Allah :swt: grant him peace, Ameen…
The greatest biography of the Prophet :saw: that was written is the Raheeq-al-Makhtoom…
This biography even goes into the details of the Holy Prophet :saw:'s birth, childhood, pre-Prophethood days and the effects of the signs that the Prophethood was having on him…