Prophet (sallalahu `alayhi wa sallam) said inna al-du`a huwa al-`ibada": " Dua'a is worship " or "Dua - It is worship" [Ahmad 4:267, 271, 276; Tirmidhi, Tafsir of surat 2:16 (#2969) and 40 (#3247, #3372) (hasan sahih); Abu Dawud Witr # 1479 (sahih); Ibn Hibban; Bukhari in al-Adab al-mufrad (sahih); Ibn Majah, Du`a Ch. 1 (#3828), and Bayhaqi in Shu`ab al-iman 2:37 (#1105bis); without "inna": Muslim, Tabarani, al-Hakim, al-Nisa'i, and Ibn Abi Shayba.]
