Valmiki Ramayana Yuddha Kanda Sarga 114 Shloka 19
Original Shlokaयदैवहिजनस्थानेराक्षसैर्भहुभिर्वृतः । खरस्तुनिहतोभ्रातातदारामो न मानुषः ।।6.114.19।। यदैवनगरींलङ्कांदुष्प्रवेशांसुरैरपि । प्रविष्टोहनुमान्वीर्यात्तदैवव्यथितावयम् ।।6.114.20।।
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जनस्थाने at Janasthana, बहुभिः many, राक्षसैः Rakshasa, वृतः surrounded by, तवभ्राता your brother, खरः Khara, हतःgot killed, तदैव so also, असौ He is, मानुषः mortal, न not, यदैव so also, हनुमान् Hanuman, सुरैरपि even gods, दुष्प्रवेशाम् difficult to enter, लङ्कांनगरीम् Lanka city, वीर्यात्, प्रविष्टः entered, तदैव that time, वयम् I, व्यथिताः got perturbed
" At Janasthana when your brother Khara was surrounded by many Rakshasas also he got killed by a mortal. So also, when Hanuman entered the city of Lanka, which is difficult to enter even for gods, I got perturbed."