Their cause won widespread support on social media and protesters rallied on Monday in support of the couple.
Arash Sadeghi, who is serving 15 years in prison on charges of conspiracy, publishing false information and propaganda against the regime, launched the hunger strike in protest at his wife's prison conditions.
Sadeghi's wife, Golrokh Ebrahimi Iraee, is serving six years for "insulting Islamic sanctities" and "spreading propaganda against the regime".
The couple's lawyer Amir Raeisian said Sadeghi had given up the hunger strike after authorities agreed yesterday to grant Iraee temporary leave from prison.
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The ILNA news agency reported that Iraee's family secured a deposit of five billion rials (USD 128,000) for her leave.
Speaking to the judiciary-linked Mizan website, Tehran's chief prosecutor Abbas Jafari Dolatabadi on Wednesday confirmed the temporary release and the end to Sadeghi's hunger strike.
He said Iraee could appeal her sentence and noted that under Iranian law, Sadeghi was eligible for release after serving seven and half years.
Sadeghi's hunger strike attracted tremendous attention among social media users and high-ranking reformist officials.
The hashtag #SaveArash was among the top trends for a few hours on Twitter this week, even though the site is blocked in Iran.
The head of the reformist camp Mohammad Reza Aref and outspoken lawmakers Ali Motahari and Mahmoud Sadeghi were among those who voiced concern for Sadeghi's health, according to the reformist Vaghaye daily.
Motahari in a social media post thanked officials for granting Iraee leave and raised the case of another hunger-striking activist, Ali Shariati, whose case was also trending on Twitter today.
"I hope judicial officials resolve this issue wisely to prevent human rights excuses for the enemies of the Islamic revolution," he wrote, posting a photo of a frail-looking Shariati in hospital receiving an injection.
Last month Iranian President Hassan Rouhani unveiled a landmark bill of rights guaranteeing freedom of speech, protest, fair trials and privacy, in an apparent effort to rally reformist supporters ahead of a re-election bid in May.
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