Surah Zilzalah Worth Half of the Quran

Abdullah Ibn 'Abbas and Anas Ibn Malik (radhiallaho anhum ajmaeen) reported that the Holy Prophet (sallal laahu alaihi wasallam) said,   'Whoever recited Surah Zilzilah (99) would get the reward of reciting half the Qur'an. Whoever recited Surah al Kaafirun (109) would get a reward as if reading a quarter of the Qur'an. Whoever recited Surah al Ikhlas (112) would get a reward as if reading one third of the Qur'an'.   [At-Tirmidhi 2818/A]