Valmiki Ramayana Sundara Kanda Sarga 37 Shloka 46

शत्रुविनाशन O destroyer of foes, त्वया सार्थम् along with you, गन्तुम् to go, न शक्ष्ये च I have no power, कलत्रवति when burdened with a woman, त्वय्यपि with you also, संदेहः doubt, स्यात् may be, असंशयः there is no doubt.

"O destroyer of foes, it is not possible for me to go with you. Further, when you are burdened with a woman you will also fall into danger (because of me), no doubt.