(2) باب وُجُوبِ الْعُمْرَةِ
It was narrated from Abu Razin that he said:
"O Messenger of Allah, my fater is an old man and he cannot perform Hajj or 'Umrah, nor can he travel." He said: "Perform Hajj and 'Umrah on behalf of your father."(sahih)
Reference: Sunan an-Nasa'i 2621
In-book reference: Book 24, Hadith 0
English translation: Vol. 3, Book 24, Hadith 2622