It is narrated from Sayyiduna Ubayy bin Malik (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Whoever finds his parents, or one of them, (alive) and (still) enters the Fire, may Allah distance him (from His mercy)."
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 541