Riyad as-Salihin

Thauban (May Allah be pleased with him) reported: Messenger of Allah (ﷺ) said, "He who guarantees me that he will not beg anything from anyone, I will guarantee him (to enter) Jannah." I said, "I give you the guarantee." Then Thauban (May Allah be pleased with him) never begged anything from anyone.

[Abu Dawud].