Sayyiduna Abdullah bin Hanzalah (may Allah be pleased with him) said: I was with Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him), and he heard a man swearing by the Qur'an. He (may Allah be pleased with him) said: "Do you think he owes the expiation of an oath for every verse?"
The statement of Ibn Mas'ud (may Allah be pleased with him), together with the mursal hadith, is evidence that swearing by the Qur'an counts as an oath in general; but the added severity in the expiation (one for every verse) has been abandoned by consensus.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأيمان / 19903