Valmiki Ramayana Ayodhya Kanda Sarga 1 Shloka 24
Original Shlokaदृढभक्ति स्स्थिरप्रज्ञो नासद्ग्राही न दुर्वचाः। निस्तन्द्रिरप्रमत्तश्च स्वदोषपरदोषवित्।।2.1.24।।
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दृढभक्तिः was firm in his devotion, स्थिरप्रज्ञः possessed a steady intellect, असद्ग्राही न not one to accept anything ignoble, दुर्वचाः न no bad words, निस्तन्द्रि: devoid of idleness, अप्रमत्तः not swayed by emotions, स्वदोषपरदोषवित् knew his faults as well as of others.
He was firm in his devotion and steady in intellect. He accepted nothing ignoble nor used bad words. He was not swayed by emotions or prone to idleness. He knew his faults as well as of others.