It was narrated from Basheer al-Nabbal, who said: I said to Abu Abdullah عليه السلام: "My mother passed away and did not perform Hajj." Imam عليه السلام said: "A man or a woman may perform Hajj on her behalf." I asked: "Which is more preferable to you?" Imam عليه السلام said: "A man is more preferable to me."