The passage of the budget is seen as vital for both the economy and Prime Minister Muhyiddin Yassin, whose position is under threat from the opposition and cracks in his coalition after just eight months in office.
The Southeast Asian nation has been in turmoil since a reformist government headed by Mahathir Mohamad, which included Anwar, collapsed in February amid bitter infighting.
Holding a former prime minister to account could mean a political shakeup and a dragged out court process.
Prime Minister Muhyiddin Yassin clears a major hurdle in parliament as lawmakers narrowly approved a motion to remove the lower house speaker, a vote seen as an important barometer of his support.
The global coronavirus pandemic has affected more than five million people, with over 334,000 deaths. Here are coronavirus-related updates for May 22:
The number of global coronavirus deaths has surpassed 237,000 with more than 3.3 million infections. Here are updates for May 1, 2020.
Former prime minister Mahathir Mohamad, who resigned last month, cautioned that the party accused of graft at 1MDB was back in power. At least six countries are investigating financial crimes at 1MDB, founded by then-premier Najib Raza.
Former premier Mahathir Mohamad said he no longer commanded a majority in parliament after some supporters abandoned him to join Prime Minister Muhyiddin Yassin camp.
The swearing-in capped a week of turmoil that began with Mahathir's resignation in an apparent bid to consolidate power, but ended with him sidelined and complaining of betrayal after decades dominating Malaysian politics.
Malaysia's king appoints seasoned politician Muhyiddin Yassin as new PM but Mahathir Mohamad says he has support of 114 lawmakers for a comeback as prime minister for a third time.
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