Sayyiduna Ibn Abbas (may Allah be pleased with them both) said that the Messenger of Allah (peace and blessings be upon him) heard a man saying "Labbayk 'an Shubrumah" (Here I am, on behalf of Shubrumah), so he said to him: "Who is Shubrumah?" He said: My brother. He (peace and blessings be upon him) said: "Have you performed Hajj?" He said: No. He (peace and blessings be upon him) said: "Perform Hajj for yourself, then perform Hajj on behalf of Shubrumah."
Ali (al-Daraqutni) said: This is the correct version from Ibn Abbas, and the one before it is a mistake. It is said that al-Hasan bin Umarah used to narrate it (that way), then retracted it and narrated it correctly, in agreement with the narration of others from Ibn Abbas; and he is matruk al-hadith (abandoned in hadith) in any case.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8685