Musannaf Ibn Abi Shayba 3:6355

Waki’ narrated to us, he said: ‘Ubayd Allah ibn ‘Abd al-Rahman ibn Mawhab narrated to us, he said: I heard Muhammad ibn Ka’b al-Qurazi saying: "That I recite 'Idha zulzilat' (Surah az-Zalzalah) and 'al-Qari’ah' in a night, repeating them and reflecting upon them, is more beloved to me than that I spend the night reciting the Quran rapidly (hadd)."