U.S. aid to Pakistan would be tied to Islamabad’s efforts to stop al-Qaida, the Taliban and other anti-Western extremist organizations from operating in its territory, under legislation expected to pass Congress on Friday.

The Pakistan aid provision was part of a package of security provisions for the United States recommended by the independent commission that studied U.S. government actions before and after the Sept. 11, 2001, attacks.

The Senate passed the bill Thursday night. The House of Representatives approved the measure Friday and sent it to President George W. Bush for his signature. The provisions would take effect Oct. 1, the start of the U.S. budget year.

Bush would have to report to Congress that Pakistan is making progress in combating al-Qaida and the Taliban before any aid could be disbursed.

In a National Intelligence Estimate released last week, U.S. analysts stressed the importance of al-Qaida’s increasingly comfortable hideout in Pakistan that has resulted from a hands-off accord between President Gen. Pervez Musharraf and Pakistani tribal leaders along the Afghan border.

That 10-month-old deal, which has unraveled in recent days, gave al-Qaida new opportunities to set up compounds for terror training, improve its international communications with associates and bolster its operations.

Since then, U.S. officials have said they expect Pakistan to launch more military strikes on Islamic militants while the Bush administration pumps hundreds of millions of dollars in development aid into lawless tribal regions to fight extremism.

On Sunday, Bush’s homeland security adviser, Frances Fragos Townsend, reiterated the importance of Musharraf’s efforts.

“We should also be clear that we believe Pakistan has been a very good ally in the war on terrorism,” she said. “Musharraf has been the subject of numerous assassination attempts. Al-Qaida’s trying to kill him. They get what the problem is, and we’re working with them to deny al-Qaida and the Taliban the safe haven.”