Manusmriti
क्षत्रविद् शूद्रयोनिस्तु दण्डं दातुमशक्नुवन् । आनृण्यं कर्मणा गच्छेद् विप्रो दद्यात्शनैः शनैः ॥ २२९ ॥
But a Kshatriya, a Vaisya, and a Sudra who are unable to pay a fine, shall discharge the debt by labour; a Brahmana shall pay it by installments.
english translation
kSatravid zUdrayonistu daNDaM dAtumazaknuvan । AnRNyaM karmaNA gacched vipro dadyAtzanaiH zanaiH ॥ 229 ॥
hk transliteration by Sanscript