Valmiki Ramayana Ayodhya Kanda Sarga 37 Shloka 32
Original Shlokaतत्त्वया पुत्रगर्धिन्या पुत्रस्य कृतमप्रियम्। लोके हि स न विद्येत यो न राममनुव्रतः।।2.37.32।।
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तत् therefore, पुत्रगर्धिन्या by a woman greedily guarding her son's interest, त्वया by you, पुत्रस्य of your son, अप्रियम् harm, कृतम् is done, लोके in this world, यः who, रामम् to Rama, अनुव्रतः follows, न not, सः he, न विद्येत हि will not be there.
Therefore, by greedily guarding your son's interest you are doing him harm. There is none in this world who will not follow Rama.