https://torontodawah.com/the-permissibility-of-performing-hajj-on-behalf-of-someone-who-did-not-do-so-provided-someone-performed-hajj-themselves-imaam-malik-imaam-abu-haneefah-imaam-al-thawri-and-imaam-al-awzaaee/
The Permissibility Of Performing Hajj On Behalf Of Someone Who Did Not Do So Provided Someone Performed Hajj Themselves - Imaam Malik, Imaam Abu Haneefah, Imaam Al-Thawri, And Imaam Al-Awzaa'ee