Despite scepticism in Europe's top economy, the four-month reprieve for Greece won overwhelming backing as expected in the lower house of parliament where Chancellor Angela Merkel's left-right coalition commands a crushing majority.
In the ballot 542 MPs voted in favour while 32 were against and 13 abstained.
Germany's deeply pro-European Finance Minister Wolfgang Schaeuble had vigorously urged MPs to approve the breathing space for debt-wracked Greece, stressing Athens must also live up to its promises.
Schaeuble, who has traded barbs with Athens in recent weeks, said that the peoples of Europe were a "community" based on solidarity where those currently better off help those in difficulty.
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"We, and especially Germany, will have a good future in the 21st century only if European integration remains successful and if we stand united in Europe," he said.
He sought to reassure MPs that the extension of the 240-billion-euro (USD 270-billion) bailout was not about "new billions" for Greece, or changing the terms of the programme, but rather about "granting more time to successfully conclude" the rescue plan adopted for Athens in 2012.
To secure the breathing space, Greek Prime Minister Alexis Tsipras's new hard-left government has published a list of proposed reforms focused on tackling tax evasion and corruption and building greater government efficiencies, to improve public finances.
While dealing with the demands of international creditors, the government is also seeking to follow through on the anti-austerity promises that swept it to power.
In Athens yesterday, a small anti-capitalist party rallied against the latest agreement. The protest also drew some black-clad anarchists, and several shops were vandalised.
But tough talk from Europe's effective paymaster has sparked bitter exchanges with Athens since elections last month ushered in Tspiras' anti-austerity government on a wave of anger at years of funding cuts and belt-tightening.
Germany is Greece's only eurozone partner to hold a parliamentary vote on granting it the extension, which aimed to avert a potentially calamitous end-February deadline that could have seen Athens default and exit from the euro.