Jordanian poet Islam Samhan was arrested for "insulting Islam" in his love poetry. Writers are calling for his release from jail.
Islam Samhan's recent collection, Grace Like A Shadow, includes phrases from the Koran, viewed as sacrosanct by Muslims as the literal word of God.
One of Jordan's leading religious figures, the grand mufti, has accused Mr Samhan of blaspheming against "God, the angels and Prophet Muhammad".
Jordanian law bans publication of any material seen as harmful to Islam.
The head of the Jordanian writers association, Saoud Qubeilat, told the daily al-Ghad that poetry relied on figures of speech which could sound blasphemous if read superficially.
He added that the arrest of Mr Samhan would stifle creativity and freedom of expression.
Writers and artists have sent a petition to the government calling the arrest a "retreat in the freedom of expression", and urging an end to "oppression of freedom and intimidation practised against intellectuals".
He faces up to three years in jail. Ironically enough, the jailed poet's name translates to "tolerant Islam."