Narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) said: "There is nothing more valuable in the sight of Allah than supplication (du'a)."
Hadith Referenceالادب المفرد / كتاب / 712
Hadith Gradingالألبانی:حسن
Hadith Takhrij«حسن : أخرجه الترمذي ، كتاب الدعوات : 3370 و ابن ماجه : 3829 - انظر صحيح الترغيب : 1629»
Explanation & Benefits
Shaykh Maulana Usman Muneeb
Benefits and Issues: In supplication (dua), the greatness and majesty of Allah Ta'ala are mentioned, and the servant expresses his own humility and helplessness. This is something that Allah Ta'ala greatly loves. Thus, supplication (dua) surpasses all other verbal remembrances (adhkar), and for this reason, one should supplicate abundantly.
Source: Fadlullah al-Ahad: Urdu Commentary on al-Adab al-Mufrad, Page: 712