It is narrated from Sayyiduna Mu'awiyah bin Haydah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Allah does not accept the repentance of a servant who commits shirk after his Islam."
And I heard the Messenger of Allah (peace and blessings be upon him) say: "Whoever goes to one of his relatives and asks him for some of his surplus wealth, and he refuses him, Allah will turn that wealth into a snake that will bite him."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17084