Valmiki Ramayana Ayodhya Kanda Sarga 59 Shloka 22
Original Shlokaकैकेय्या विनियुक्तेन पापाभिजनभावया। मया न मन्त्रकुशलैर्वृद्धैस्सह समर्थितम्।।2.59.22।।
1 source checked for this shloka
पापाभिजनभावया by one who has wicked relations and sinful intention, कैकेय्या by Kaikeyi, विनियुक्तेन having been incited, मया by me, मन्त्रकुशलैः with men skilled in giving advice, वृद्धै: सह with seniors, न समर्थितम् was not consulted.
Incited by Kaikeyi of sinful relations and sinful motive, I did not consult expert, elderly counsellers.