Hassan bin Atiyyah (may Allah have mercy on him) said: When death came to Anbasah bin Abi Sufyan (may Allah have mercy on him), he became greatly distressed. It was said to him: Why this distress? He said: I heard my sister Umm Habibah (may Allah be pleased with her) say that the Prophet (peace and blessings be upon him) said: "Whoever prays four rak'ahs before Zuhr and four after it, his flesh is made forbidden to Hell." After hearing this, I never abandoned these rak'ahs.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4482