The powerful explosion ripped through a mosque during the evening prayers on Friday.
The federal judge granted the "compassionate release" request made by the 84-year-old Muslim cleric's three sons.
The adjournment was the first following a petition from Dr Shakil Afridi, who was sentenced to 33 years in 2012.
U.S. officials however have been keen to say there is no resumption of peace talks, at least not now in Islamabad.
Taliban co-founder Mullah Baradar was due in Pakistan Wednesday as U.S. envoy Zalmay Khalilzad also visited.
Administration officials would provide no more information beyond the three-sentence statement from the White House.
"I just don't want to kill 10 million people," Trump said in the Oval Office.
It will be Khan's first trip to the U.S. since becoming prime minister.
An Indian pilot whose captivity caused fears that the subcontinent could erupt into war was handed over to officials.
Nuclear-armed rivals India and Pakistan face their worst tension in years over the disputed region of Kashmir.