Manusmriti
अन्योन्यस्याव्यभिचारो भवेदामरणान्तिकः । एष धर्मः समासेन ज्ञेयः स्त्रीपुंसयोः परः ॥ १०१ ॥
’Let mutual fidelity continue until death,’this may be considered as the summary of the highest law for husband and wife.
english translation
anyonyasyAvyabhicAro bhavedAmaraNAntikaH । eSa dharmaH samAsena jJeyaH strIpuMsayoH paraH ॥ 101 ॥
hk transliteration by Sanscript