Ramayana
इदं त्वसदृशं कर्म परदाराभिमर्शनम् । यस्मादेष परक्यासु रमते राक्षसाधमः ॥ 7-24-20 ॥
'But this is an unseemly deed — the laying of hands upon others' wives — since this basest of rakshasas takes his pleasure in women belonging to others.'
english translation