From Abdullaah ibn ?Amr ibnul-?Aas radiyallaahu that the Prophet sallallaahu alaihe wa sallam said: ?Whoever recites ten aayaat in Qiyaam will not be recorded as one of the forgetful. Whoever recites a hundred aayaat in Qiyaam will be recorded as one of the devout, and whoever prays a thousand aayaat in Qiyaam will be recorded as one of the Muqantareen (one who a qintaar of reward has been written for him or those who pile up good deeds).?
Reported by the Imaams Aboo Daawood and Ibn Khuzaymah. It is graded as saheeh according to the imaam, Muhammad Naasiruddeen al-Albaanee in Saheehut-Targheeb wat Tarheeb volume 1, pages 406-7 # 639).
al-Haafidh (Ibnu Hajar) said: From Soorah: Tabaarakalladhee bi yadihil Mulk [Sooratul Mulk 67] to the end of the Qur'aan is one thousand aayah"