Complex sentence: He died on 20 April 2008 of cardiac arrest on Sunday night at the age of 65 in Lahore and buried in the side area of a mosque for which he trusted his land and funded that mosque to be built.
Split into simpler sentences: He died on Sunday night, 20 April 2008 of cardiac arrest at the age of 65 in Lahore. Tahir is buried in the side area of a mosque in which he trusted his land and funded the mosque to be built.