Hadith.2926 - Ali ibn Mahziyar narrated from Muhammad ibn Isma'il, who said
I instructed someone to ask Abu al-Hasan (as) about a man who accepts funds for Hajj from one person, but it is insufficient. Can he then take another Hajj fund from a different person to cover the costs, allowing it to suffice for both of them? Or should he abandon both if one is insufficient?
Imam (as) replied: "It is preferable to dedicate the Hajj exclusively to one person. If it is insufficient, he should not accept it."