Manusmriti

siva.sh/manusmriti/2/159

अहिंसयैव भूतानां कार्यं श्रेयोऽनुशासनम् । वाक् चैव मधुरा श्लक्ष्णा प्रयोज्या धर्ममिच्छता ॥ १५९ ॥

sanskrit

Created beings must be instructed in (what concerns) their welfare without giving them pain, and sweet and gentle speech must be used by (a teacher) who desires (to abide by) the sacred law.

english translation

ahiMsayaiva bhUtAnAM kAryaM zreyo'nuzAsanam | vAk caiva madhurA zlakSNA prayojyA dharmamicchatA || 159 ||

hk transliteration by Sanscript